4u chairs
4u Model: 787-W-74C-53A20S-18WB-16HP-02UG | Fabric: ArcCom Rogue Fog (Seat). finally, a chair 4u
4u is a cutting edge Italian seating series designed by S.I. Design. The flowing sleek lines of this chair add to the ambiance of sophistication in any environment while also providing incredible ergonomics, comfort, and functionality. A range of back offerings in mesh, upholstered, or the newest, welded fabric “groove”, which is a sleek and comfortable hybrid of both mesh and fabric. Both white and black frames are available with matching arms and bases. There are 8 arm choices including 6-way adjustable armrest—angle, width and height adjustments—and 3 controls including body balance and synchro options enabling you to customize to your exact needs. 4u also offers 2 seat sizes and two seat shape options with the Euro sit and the comfort sit both available. Also available as task stools.
There’s no doubt about it. This chair is 4u.
- Mesh backs: 4-way elastomeric stretch mesh encased in 3 colors with optional adjustable lumbar.
- Upholstered backs: beautiful sleek upholstered back version with integrated, adjustable lumbar standards.
- Groove backs: 7 colors of welded fabric provide an incredibly comfortable hybrid between mesh and upholstered back.
- Seats: offering two distinct seat styles—original slim line design with seat pan and new enhanced comfort seat with extra height in the cushioning of the seat. Both are available in standard & large seat sizes.
- Via Seating’s comfort foam: a proprietary blend of high-density, injection-molded, closed-cell, cold-cured foam so durable and lasting it is backed by Via Seating’s 12 year warranty.
- Control mechanisms: featuring quick adjust advanced synchro that uses single rotation adjustments for the back (no endless turning of the handle to adjust your backrest to your level of comfort). Simple body balance and enhanced body balance options.
- Arms: multiple height and width adjustable options and a fixed, conference arm.
- Bases: five-star bases available in black nylon, white nylon, polished aluminum & brushed aluminum to match the white frame finishes.
- Max weight: 400 lb. (see options for more details)
- Quick Ship: 20 chairs produced in a 48 hour period for mesh & groove backs. 15 chairs produced in a 48 hour period for upholstered backs.
- Warranty: 12 year warranty including the foam, 5 years for mesh & groove.
- CDPH Standard Method v1.1-2010 (Clean Air Gold).
- LEED – v4.1 Low Emitting Materials (Clean Air Gold).
- Living Building Challenge (LBC) – Imperative 08 (Clean Air Gold).
- WELL – Feature 04 – VOC Reduction (Clean Air Gold).
Upholstered back chair, slim line seat.
- Medium seat. (770)
- Large seat. (771)
Upholstered back chair, enhanced comfort seat.
- Medium seat. (772)
- Large seat. (773)
Upholstered back stools.
Available on medium slim line & enhanced comfort seats.
Groove back chair, slim line seat.
- Medium seat. (785)
- Large seat. (786)
Groove back chair, enhanced comfort seat.
- Medium seat. (787)
- Large seat. (788)
Groove back stools.
Available on medium slim line & enhanced comfort seats.
Mesh back chair, slim line seat.
- Medium seat. (780)
- Large seat. (781)
Mesh back chair, enhanced comfort seat.
- Medium seat. (782)
- Large seat. (783)
Mesh back stools.
Available on medium slim line & enhanced comfort seats.
finishes
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Frame finishes.
Matte black. (-B)
- Black finish is standard.
- Finish applied to mesh frame.
Matte white. (-W)
- Finish applied to mesh frame.
meshes
arms
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Armless standard.
Armless. (-0A)
- Armless chairs are standard on all models.
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Adjustable arms.
4u arm with 6-way adjustment, black finish.
-33A
Features a 6D height adjustable arm custom to the 4u series that offers the following adjustments:
- Arm moves up and down.
- Permanent armrest rotates in 15°, out 15°.
- Permanent armrest slides out 1.5″, slides back to resting position.
Armrest is permanent & unique to this arm.
user guide: view the guide →
4u arm with 6-way adjustment, white finish.
-35A
Features a 6D height adjustable arm custom to the 4u series that offers the following adjustments:
- Arm moves up and down.
- Permanent armrest rotates in 15°, out 15°.
- Permanent armrest slides out 1.5″, slides back to resting position.
Armrest is permanent & unique to this arm.
user guide: view the guide →
Basic height adjustable arm, black finish. (-38A)
Features a 2D to 4D height adjustable arm that offers the following adjustments:
- Arm moves up and down.
- Optional arm width adjustment bracket extends each arm 2.0″ away from the sides of the chairs and back to the resting position.
Preferred armrest:
6 capuser guide: view the guide →
Roll back arm. (-39A)
Features a 3D height adjustable arm that offers the following adjustments:
- Arm moves up and down.
- Smooth roll back feature where the arm can be fully rolled back out of the way to easily slide in and out of the chair.
Preferred armrest:
6 capuser guide: view the guide →
8-way adjustable arm, black finish. (-51A)
Features a 2D to 8D height adjustable arm that offers the following adjustments:
- Arm moves up and down.
- Optional armrest rotates in 15°, out 15°.
- Optional armrest slides out 1.5″, slides back to resting position.
- Optional arm width adjustment bracket extends each arm 2.0″ away from the sides of the chairs and back to the resting position.
- Optional upholstery can be added on static armrest 20S & and 4D rotating armrest 20R.
Armrest choices include:
20S static cap is fixed
20R rotating cap- Both armrests are available with option of upholstery. The 20R example above shows upholstery applied.
user guide: view the guide →
8-way adjustable arm, white finish. (-52A)
Features a 2D to 8D height adjustable arm that offers the following adjustments:
- Arm moves up and down.
- Optional armrest rotates in 15°, out 15°.
- Optional armrest slides out 1.5″, slides back to resting position.
- Optional arm width adjustment bracket extends each arm 2.0″ away from the sides of the chairs and back to the resting position.
- Optional upholstery can be added on static armrest 20S & and 4D rotating armrest 20R.
Armrest choices include:
20S static cap is fixed20R rotating cap- Both armrests are available with option of upholstery. The 20R example above shows upholstery applied.
user guide: view the guide →
8-way adjustable arm, polished finish. (-53A)
Features a 2D to 8D height adjustable arm that offers the following adjustments:
- Arm moves up and down.
- Optional armrest rotates in 15°, out 15°.
- Optional armrest slides out 1.5″, slides back to resting position.
- Optional arm width adjustment bracket extends each arm 2.0″ away from the sides of the chairs and back to the resting position.
- Optional upholstery can be added on static armrest 20S & and 4D rotating armrest 20R.
Armrest choices include:
20S static cap is fixed20R rotating cap- Both armrests are available with option of upholstery. The 20R example above shows upholstery applied.
user guide: view the guide →
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Fixed arms.
Fixed conference arm. (-46A)
- Permanent armrest is fixed.
control mechanisms
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Body balance control mechanisms.
Auto-adjust body balance control. *new* (-74C)
adjustments:
1 Seat height adjustment.
2 Back lock adjustment (3 position).note: 66C alternate.
user guide: view the guide →
Auto-adjust body balance control & seat slider. *new* (-74C-12SS)
adjustments:
1 Seat height adjustment.
2 Back lock adjustment (3 position).
3 Seat depth adjustment.note: 66C-12SS alternate.
user guide: view the guide →
Enhanced body balance control with dynamic fine-tuning. (-68C)
adjustments:
1 Seat height adjustment.
2 Back tension adjustment.
3 Tilt limiter.user guide: view the guide →
Enhanced body balance control with dynamic fine-tuning & a seat slider. (-68C-12SS)
adjustments:
1 Seat height adjustment.
2 Back tension adjustment.
3 Tilt limiter.
4 Seat depth adjustment.user guide: view the guide →
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Synchro control mechanisms.
Quick adjust advanced synchro control. *new* (-67C)
adjustments:
1 Seat height adjustment.
2 Back tension adjustment.
3 Single rotation back tilt lock adjustment (5 position).user guide: view the guide →
Quick adjust advanced synchro control with a seat slide. *new* (-67A)
adjustments:
1 Seat height adjustment.
2 Back tension adjustment.
3 Single rotation back tilt lock adjustment (5 position).
4 Seat depth adjustment.user guide: view the guide →
Quick adjust advanced synchro control with a seat slide & forward tilt adjustment. *new* (-67CSS-FT)
adjustments:
1 Seat height adjustment.
2 Back tension adjustment.
3 Single rotation back tilt lock adjustment (5 position).
4 Seat depth adjustment.
5 Forward tilt adjustment.user guide: view the guide →
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Task stool control.
Auto-adjust body balance stool control. *new* (-35C)
adjustments:
1 Seat height adjustment.
2 Back lock adjustment (single position).
3 Foot ring height adjustment.This style matches the 74C & 74C-12SS controls.
user guide: view the guide →
adjustable lumbars
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Optional adjustable lumbar supports.
4u mesh & groove adjustable lumbar support, black finish. (-LS4B)
- Option on mesh and groove backs.
- Offers height adjustable lumbar as an option i.e. “vertical adjustment” with 2.3″ of travel.
- Adjusts independently from the back.
- Allows the user to promote the natural, forward curve of his/her lower back.
- Promotes an optimal sitting position and the opportunity to maintain this posture throughout the entire work day.
user guide: view the guide →
4u mesh & groove adjustable lumbar support, white finish. (-LS4W)
- Option on mesh and groove backs.
- Offers height adjustable lumbar as an option i.e. “vertical adjustment” with 2.3″ of travel.
- Adjusts independently from the back.
- Allows the user to promote the natural, forward curve of his/her lower back.
- Promotes an optimal sitting position and the opportunity to maintain this posture throughout the entire work day.
user guide: view the guide →
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Built-in adjustable lumbar supports.
4u upholstered backs integrated adjustable lumbar support.
- Integrated into upholstered backs. This is always included.
- Adjusted through a tiny, black handle located on the right side of the back of the chair.
- Offers height adjustable lumbar as an option i.e. “depth adjustment” with 2.3″ of travel.
- Adjusts independently from the back.
- Allows the user to promote the natural, forward curve of his/her lower back.
- Promotes an optimal sitting position and the opportunity to maintain this posture throughout the entire work day.
user guide: view the guide →
bases
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Chair swivel bases.
Black nylon 5-star base. (-18BB)
- Standard base with black frames.
Powder coated white aluminum 5-star base. (-18WB)
- Standard base with white frames.
Polished aluminum 5-star base. (-18PB)
Brushed aluminum 5-star. (-18BA)
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Stool swivel bases.
Black nylon 5-star base with foot ring. (-18BB-11DR, -18BB-11XDR)
- Standard stool base with black frames.
- Tall (-11DR) height range/stroke: 7 in.
- Extra-tall (-11XDR) height range/stroke: 9.5 in.
- See exact dimensions in the drawings section.
Powder coated white aluminum 5-star base with foot ring. (-18WB-11DR, -18WB-11XDR)
- Standard stool base with white frames.
- Tall (-11DR) height range/stroke: 7 in.
- Extra-tall (-11XDR) height range/stroke: 9.5 in.
- See exact dimensions in the drawings section.
Polished aluminum 5-star with foot ring. (-18PB-11DR, -18PB-11XDR)
- Tall (-11DR) height range/stroke: 7 in.
- Extra-tall (-11XDR) height range/stroke: 9.5 in.
- See exact dimensions in the drawings section.
Brushed aluminum 5-star with foot ring. (-18BA-11DR, -18BA-11XDR)
- Tall (-11DR) height range/stroke: 7 in.
- Extra-tall (-11XDR) height range/stroke: 9.5 in.
- See exact dimensions in the drawings section.
casters & glides
designed by S.I. Design
Lorenzo Negrello was born in Pádova in 1953. He Graduatd in Architecture in Venice in 1977. From 1978 to 1988, he was a teacher of design at the Institute of Art in Pádova and at the Art Lycée in Venice. Between 1980 and 1996, designer Lorenzo Negrello worked in partnership with architect Paolo Scagnellato, with two projects being nominated for the “Compasso d’Oro” Industrial Design award.
In 1996 Lorenzo founded S.I. Design with designers Emanuele Bertolini and Mauro Naletto. S.I. specializes in furniture design, particularly for offices and communal spaces. Today, their team of eight focuses on design and technical assistance in product development utilizing advanced modeling programs.
studio: Pádova, Italy.
Dimensions recorded by Via Seating engineers using:
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the BIFMA Chair Measuring Device® (CMD) &
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the BIFMA Universal Measuring Procedure.
chair drawings
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Mesh back chairs with a quick adjust advanced synchro control, all seats. (780, 781, 782, 783 with -67C, -67CSS).
67C control.
seats Medium SL (780) Medium EC (781) Large SL (782) Large EC (783) A 37.3″ – 42.1″ 39.7″ – 41.9″ 37.3″ – 42.1″ 36.9″ – 41.7″ B 16.6″ – 21.4″ 17.6″ – 19.7″ 15.6″ – 20.4″ 17.8″ – 22.6″ C 19.5″ 21.0″ 20.5″ 22.2″ D 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ E 22.5″ 21.7″ 22.5″ 21.9″ F 28.2″ 27.4″ 28.2″ 27.9″ G 16.3″ 15.1″ 16.3″ 18.3″ 
67CSS control with seat slider.
seats Medium SL (780) Medium EC (781) Large SL (782) Large EC (783) A 38.2″ – 43.0″ 40.6″ – 45.4″ 38.2″ – 43.0″ 37.8″ – 42.6″ B 17.1″ – 21.9″ 18.1″ – 22.9″ 16.1″ – 20.9″ 18.3″ – 23.1″ C 19.5″ 21.0″ 20.5″ 22.2″ D 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ E 21.5″ 20.7″ 21.5″ 20.9″ F 28.2″ 27.4″ 28.2″ 27.9″ G 15.1″ – 17.1″ 13.9″ – 15.9″ 15.1″ – 17.1″ 17.1″ – 19.1″ -
Mesh back chairs with an enhanced body balance control, all seats. (780, 781, 782, 783 with -68C, -68C-12SS).
68C control.
seats Medium SL (780) Medium EC (781) Large SL (782) Large EC (783) A 38.5″ – 43.3″ 40.9″ – 45.7″ 38.5″ – 43.3″ 38.1″ – 42.9″ B 16.7″ – 21.5″ 17.7″ – 22.5″ 15.7″ – 20.5″ 17.9″ – 22.7″ C 19.5″ 21.0″ 20.5″ 22.2″ D 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ E 22.6″ 21.8″ 22.6″ 22.0″ F 26.5″ 25.7″ 26.5″ 26.2″ G 16.5″ 15.3″ 16.5″ 18.5″ 
+ 68C-12SS control with seat slider.
seats Medium SL (780) Medium EC (781) Large SL (782) Large EC (783) A 38.5″ – 43.3″ 40.9″ – 45.7″ 38.5″ – 43.3″ 38.1″ – 42.9″ B 17.2″ – 22.0″ 18.2″ – 23.0″ 16.2″ – 21.0″ 18.4″ – 23.2″ C 19.5″ 21.0″ 20.5″ 22.2″ D 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ E 22.6″ 21.8″ 22.6″ 22.0″ F 26.5″ 25.7″ 26.5″ 26.2″ G 16.5″ – 18.5″ 15.3″ – 17.3″ 16.5″ – 18.5″ 18.5″ – 20.5″ -
Mesh back chairs with an auto-adjust body balance control, all seats. (780, 781, 782, 783 with -74C, -74C-12SS).
74C control.
seats Medium SL (780) Medium EC (781) Large SL (782) Large EC (783) A 37.6″ – 42.4″ 40.0″ – 44.8″ 37.6″ – 42.4″ 37.2″ – 42.0″ B 16.7″ – 21.5″ 17.7″ – 22.5″ 15.7″ – 20.5″ 17.9″ – 22.7″ C 19.5″ 21.0″ 20.5″ 22.2″ D 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ E 22.2″ 21.4″ 22.2″ 21.6″ F 28.2″ 27.4″ 28.2″ 27.9″ G 17.1″ 15.9″ 17.1″ 19.1″ 
+ 74C-12SS control with seat slider.
seats Medium SL (780) Medium EC (781) Large SL (782) Large EC (783) A 37.6″ – 42.4″ 40.0″ – 44.8″ 37.6″ – 42.4″ 37.2″ – 42.0″ B 17.2″ – 22.0″ 18.2″ – 23.0″ 16.2″ – 21.0″ 18.4″ – 23.2″ C 19.5″ 21.0″ 20.5″ 22.2″ D 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ E 21.7″ 20.9″ 21.7″ 21.6″ F 28.2″ 27.4″ 28.2″ 27.9″ G 16.5″ – 18.5″ 15.3″ – 17.3″ 16.5″ – 18.5″ 18.5″ – 20.5″
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Groove back chairs with a quick adjust advanced synchro control, all seats. (785, 786, 787, 788 with -67C, -67CSS).
67C control.
seats Medium SL (785) Medium EC (786) Large SL (787) Large EC (788) A 37.2″ – 42.0″ 37.1″ – 41.9″ 37.2″ – 42.0″ 36.9″ – 41.7″ B 16.2″ – 21.0″ 17.5″ – 21.3″ 16.1″ – 20.9″ 17.8″ – 22.6″ C 19.5″ 21.0″ 20.5″ 22.2″ D 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ E 22.9″ 22.0″ 22.5″ 21.9″ F 24.8″ 27.0″ 26.2″ 27.9″ G 16.1″ 18.6″ 16.1″ 18.3″ 
67CSS control with seat slider.
seats Medium SL (785) Medium EC (786) Large SL (787) Large EC (788) A 38.1″ – 42.9″ 38.0″ – 42.8″ 38.1″ – 42.9″ 37.8″ – 42.6″ B 16.7″ – 21.5″ 18.0″ – 22.8″ 16.6″ – 21.4″ 18.3″ – 23.1″ C 19.5″ 21.0″ 20.5″ 22.2″ D 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ E 22.9″ 21.0″ 21.5″ 20.9″ F 24.8″ 27.0″ 26.2″ 27.9″ G 14.9″ – 16.9″ 17.4″ – 19.4″ 14.9″ – 16.9″ 17.1″ – 19.1″ -
Groove back chairs with an enhanced body balance control, all seats. (785, 786, 787, 788 with -68C, -68C-12SS).
68C control.
seats Medium SL (785) Medium EC (786) Large SL (787) Large EC (788) A 38.4″ – 43.2″ 38.3″ – 43.1″ 38.4″ – 43.2″ 38.1″ – 42.9″ B 16.3″ – 21.1″ 17.6″ – 22.4″ 16.2″ – 21.0″ 17.9″ – 22.7″ C 19.5″ 21.0″ 20.5″ 22.2″ D 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ E 23.0″ 22.1″ 22.6″ 22.0″ F 23.1″ 25.3″ 24.5″ 26.2″ G 16.3″ 18.8″ 16.3″ 18.5″ 
+ 68C-12SS control with seat slider.
seats Medium SL (785) Medium EC (786) Large SL (787) Large EC (788) A 38.4″ – 43.2″ 38.3″ – 43.1″ 38.4″ – 43.2″ 38.1″ – 42.9″ B 16.8″ – 21.6″ 18.1″ – 22.9″ 16.7″ – 21.5″ 18.4″ – 23.2″ C 19.5″ 21.0″ 20.5″ 22.2″ D 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ E 23.0″ 22.1″ 22.6″ 22.0″ F 23.1″ 25.3″ 24.5″ 26.2″ G 16.3″ – 18.3″ 18.8″ – 20.8″ 16.3″ – 18.3″ 18.5″ – 20.5″ -
Groove back chairs with an auto-adjust body balance control, all seats. (785, 786, 787, 788 with -74C, -74C-12SS).
74C control.
seats Medium SL (785) Medium EC (786) Large SL (787) Large EC (788) A 37.5″ – 42.3″ 37.4″ – 42.2″ 37.5″ – 42.3″ 37.2″ – 42.0″ B 16.3″ – 21.1″ 17.6″ – 22.4″ 16.2″ – 21.0″ 17.9″ – 22.7″ C 19.5″ 21.0″ 20.5″ 22.2″ D 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ E 22.6″ 21.7″ 22.2″ 21.6″ F 24.8″ 27.0″ 26.2″ 27.9″ G 16.9″ 19.4″ 16.9″ 19.1″ 
+ 74C-12SS control with seat slider.
seats Medium SL (785) Medium EC (786) Large SL (787) Large EC (788) A 37.5″ – 42.3″ 37.4″ – 42.2″ 37.5″ – 42.3″ 37.2″ – 42.0″ B 16.8″ – 21.6″ 18.1″ – 22.9″ 16.7″ – 21.5″ 18.4″ – 23.2″ C 19.5″ 21.0″ 20.5″ 22.2″ D 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ E 22.1″ 21.2″ 21.7″ 21.6″ F 24.8″ 27.0″ 26.2″ 27.9″ G 16.3″ – 18.3″ 18.8″ – 20.8″ 16.3″ – 18.3″ 18.5″ – 20.5″
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Upholstered back chairs with a quick adjust advanced synchro control, all seats. (770, 771, 772, 773 with -67C, -67CSS).
67C control.
seats Medium SL (770) Medium EC (771) Large SL (772) Large EC (773) A 37.2″ – 42.0″ 37.2″ – 42.0″ 38.1″ – 42.9″ 37.2″ – 42.0″ B 16.2″ – 21.0″ 17.0″ – 21.8″ 16.4″ – 21.2″ 18.2″ – 22.6″ C 19.5″ 21.0″ 20.5″ 22.2″ D 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ E 23.0″ 22.6″ 23.0″ 22.0″ F 24.8″ 26.0″ 25.1″ 27.9″ G 16.2″ 16.1″ 16.2″ 17.4″ 
67CSS control with seat slider.
seats Medium SL (770) Medium EC (771) Large SL (772) Large EC (773) A 38.1″ – 42.9″ 38.1″ – 42.9″ 39.0″ – 43.8″ 38.1″ – 42.9″ B 16.7″ – 21.5″ 17.5″ – 22.3″ 16.9″ – 21.7″ 18.7″ – 23.5″ C 19.5″ 21.0″ 20.5″ 22.2″ D 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ E 23.0″ 21.6″ 22.0″ 21.0″ F 24.8″ 26.0″ 25.1″ 27.9″ G 15.0″ – 17.0″ 14.9″ – 16.9″ 15.0″ – 17.0″ 16.2″ – 18.2″ -
Upholstered back chairs with an enhanced body balance control, all seats. (770, 771, 772, 773 with -68C, -68C-12SS).
68C control.
seats Medium SL (770) Medium EC (771) Large SL (772) Large EC (773) A 38.4″ – 43.2″ 38.4″ – 43.2″ 39.3″ – 44.1″ 38.4″ – 43.2″ B 16.3″ – 21.1″ 17.1″ – 21.9″ 16.5″ – 21.3″ 18.3″ – 23.1″ C 19.5″ 21.0″ 20.5″ 22.2″ D 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ E 23.1″ 22.7″ 23.1″ 22.1″ F 23.1″ 24.3″ 23.4″ 26.2″ G 16.4″ 16.3″ 16.4″ 17.6″ 
+ 68C-12SS control with seat slider.
seats Medium SL (770) Medium EC (771) Large SL (772) Large EC (773) A 38.4″ – 43.2″ 38.4″ – 43.2″ 39.3″ – 44.1″ 38.4″ – 43.2″ B 16.8″ – 21.6″ 17.6″ – 22.4″ 17.0″ – 21.8″ 18.8″ – 23.6″ C 19.5″ 21.0″ 20.5″ 22.2″ D 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ E 23.1″ 22.7″ 23.1″ 22.1″ F 23.1″ 24.3″ 23.4″ 26.2″ G 16.4″ – 18.4″ 16.3″ – 18.3″ 16.4″ – 18.4″ 17.6″ – 19.6″ -
Upholstered back chairs with an auto-adjust body balance control, all seats. (770, 771, 772, 773 with -74C, -74C-12SS).
74C control.
seats Medium SL (770) Medium EC (771) Large SL (772) Large EC (773) A 37.5″ – 42.3″ 37.5″ – 42.3″ 38.4″ – 43.2″ 37.5″ – 42.3″ B 16.3″ – 21.1″ 17.1″ – 21.9″ 16.5″ – 21.3″ 18.3″ – 23.1″ C 19.5″ 21.0″ 20.5″ 22.2″ D 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ E 22.7″ 22.3″ 22.7″ 21.7″ F 24.8″ 26.0″ 25.1″ 27.9″ G 17.0″ 16.9″ 17.0″ 18.2″ 
+ 74C-12SS control with seat slider.
seats Medium SL (770) Medium EC (771) Large SL (772) Large EC (773) A 37.5″ – 42.3″ 37.5″ – 42.3″ 38.4″ – 43.2″ 37.5″ – 42.3″ B 16.8″ – 21.6″ 17.1″ – 21.9″ 17.0″ – 21.8″ 18.8″ – 23.6″ C 19.5″ 21.0″ 20.5″ 22.2″ D 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ 18.2″ – 19.0″ E 22.2″ 21.8″ 22.2″ 21.2″ F 24.8″ 26.0″ 25.1″ 27.9″ G 16.4″ – 18.4″ 16.3″ – 18.3″ 16.4″ – 18.4″ 17.6″ – 19.6″
stool drawings
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Mesh back stools, medium seats (780, 782)
stool kits Medium SL (780) Medium EC (782) A 43.4″ – 50.4″ 43.4″ – 50.4″ B 22.5″ – 29.5″ 21.5″ – 28.5″ C 19.5″ 20.5″ D 18.2″ – 19.0″ 18.2″ – 19.0″ E 22.6″ 22.6″ F 26.0″ 26.0″ G 16.5″ 16.5″
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Groove back stools, medium seats (785, 787)
stool kits Medium SL (785) Medium EC (787) A 43.3″ – 50.3″ 43.3″ – 50.3″ B 22.1″ – 29.1″ 22.0″ – 29.0″ C 19.5″ 20.5″ D 18.2″ – 19.0″ 18.2″ – 19.0″ E 23.0″ 22.6″ F 22.6″ 26.0″ G 16.3″ 16.5″
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Upholstered back stools, medium seats (770, 771)
stool kits Medium SL (770) Medium EC (772) A 43.3″ – 50.3″ 44.2″ – 51.2″ B 22.1″ – 29.1″ 22.3″ – 29.3″ C 19.5″ 20.5″ D 18.2″ – 19.0″ 18.2″ – 19.0″ E 23.1″ 23.1″ F 22.6″ 22.9″ G 16.4″ 16.4″
seat drawings
Seat Reference Point (SRP),
The ergonomic seat depth measurement.
Measurement G (and not measurement H) is the true seat reference point. SRP is an ergonomic term that defines where there is a slight indentation in the lumbar (i.e. where the sitter is benefiting from the lumbar support) to the front edge of the seat. It gives the true measurement of surface area in contact with the body. It is very useful for correctly matching up with hip to knee measurements for ergonomists taking into account the two – three finger gap between the back of the leg to the edge of the seat. It is very important to ensure no restriction in circulation to the lower extremities (lower legs and ankles).
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Mesh back, slim line medium seat. (780)
controls 74C 67C 68C C 19.5″ (74C)
19.5″ (74C-12SS)19.5″ (67C)
19.5″ (67CSS)19.5″ (68C)
19.5″ (68C-12SS)G 17.1″ (74C)
16.5″ – 19.2″ (74C-12SS)16.3″ (67C)
15.1″ – 18.3″ (67CSS)16.5″ (68C)
16.5″ – 19.2″ (68C-12SS)H 19.4″ (74C)
19.4″ (74C-12SS)19.4″ (67C)
19.4″ (67CSS)19.4″ (68C)
19.4″ (68C-12SS)Additions to starting controls:
- -12SS: Bolt-on seat depth adjustment.
- 67CSS: 67C control with a seat slider.
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Mesh back, slim line large seat. (781)
controls 74C 67C 68C C 21.0″ (74C)
21.0″ (74C-12SS)21.0″ (67C)
21.0″ (67CSS)21.0″ (68C)
21.0″ (68C-12SS)G 15.9″ (74C)
15.3″ – 17.3″ (74C-12SS)15.1″ (67C)
13.9″ – 15.9″ (67CSS)15.3″ (68C)
15.3″ – 17.3″ (68C-12SS)H 21.0″ (74C)
21.0″ (74C-12SS)21.0″ (67C)
21.0″ (67CSS)21.0″ (68C)
21.0″ (68C-12SS)Additions to starting controls:
- -12SS: Bolt-on seat depth adjustment.
- 67CSS: 67C control with a seat slider.
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Mesh back, enhanced comfort medium seat. (782)
controls 74C 67C 68C C 20.5″ (74C)
20.5″ (74C-12SS)20.5″ (67C)
20.5″ (67CSS)20.5″ (68C)
20.5″ (68C-12SS)G 17.1″ (74C)
16.5″ – 18.5″ (74C-12SS)16.3″ (67C)
15.1″ – 17.1″ (67CSS)16.5″ (68C)
16.5″ – 18.5″ (68C-12SS)H 20.0″ (74C)
20.0″ (74C-12SS)20.0″ (67C)
20.0″ (67CSS)20.0″ (68C)
20.0″ (68C-12SS)Additions to starting controls:
- -12SS: Bolt-on seat depth adjustment.
- 67CSS: 67C control with a seat slider.
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Mesh back, enhanced comfort large seat. (783)
controls 74C 67C 68C C 22.2″ (74C)
22.2″ (74C-12SS)22.2″ (67C)
22.2″ (67CSS)22.2″ (68C)
22.2″ (68C-12SS)G 18.3″ (74C)
17.7″ – 19.1″ (74C-12SS)19.1″ (67C)
18.5″ – 20.5″ (67CSS)18.5″ (68C)
18.5″ – 20.5″ (68C-12SS)H 20.0″ (74C)
20.0″ (74C-12SS)20.0″ (67C)
20.0″ (67CSS)20.0″ (68C)
20.0″ (68C-12SS)Additions to starting controls:
- -12SS: Bolt-on seat depth adjustment.
- 67CSS: 67C control with a seat slider.
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Groove back, slim line medium seat. (785)
controls 74C 67C 68C C 19.5″ (74C)
19.5″ (74C-12SS)19.5″ (67C)
19.5″ (67CSS)19.5″ (68C)
19.5″ (68C-12SS)G 16.9″ (74C)
16.3″ – 18.3″ (74C-12SS)16.1″ (67C)
14.9″ – 16.9″ (67CSS)16.3″ (68C)
16.3″ – 18.3″ (68C-12SS)H 19.4″ (74C)
19.4″ (74C-12SS)19.4″ (67C)
19.4″ (67CSS)19.4″ (68C)
19.4″ (68C-12SS)Additions to starting controls:
- -12SS: Bolt-on seat depth adjustment.
- 67CSS: 67C control with a seat slider.
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Groove back, slim line large seat. (786)
controls 74C 67C 68C C 21.0″ (74C)
21.0″ (74C-12SS)21.0″ (67C)
21.0″ (67CSS)21.0″ (68C)
21.0″ (68C-12SS)G 15.9″ (74C)
15.3″ – 17.3″ (74C-12SS)15.1″ (67C)
13.9″ – 15.9″ (67CSS)15.3″ (68C)
15.3″ – 17.3″ (68C-12SS)H 21.5″ (74C)
21.5″ (74C-12SS)21.5″ (67C)
21.5″ (67CSS)21.5″ (68C)
21.5″ (68C-12SS)Additions to starting controls:
- -12SS: Bolt-on seat depth adjustment.
- 67CSS: 67C control with a seat slider.
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Groove back, enhanced comfort medium seat. (787)
controls 74C 67C 68C C 20.5″ (74C)
20.5″ (74C-12SS)20.5″ (67C)
20.5″ (67CSS)20.5″ (68C)
20.5″ (68C-12SS)G 16.9″ (74C)
16.3″ – 18.3″ (74C-12SS)16.1″ (67C)
14.9″ – 16.9″ (67CSS)16.3″ (68C)
16.3″ – 18.3″ (68C-12SS)H 20.0″ (74C)
20.0″ (74C-12SS)20.0″ (67C)
20.0″ (67CSS)20.0″ (68C)
20.0″ (68C-12SS)Additions to starting controls:
- -12SS: Bolt-on seat depth adjustment.
- 67CSS: 67C control with a seat slider.
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Groove back, enhanced comfort large seat. (788)
controls 74C 67C 68C C 22.2″ (74C)
22.2″ (74C-12SS)22.2″ (67C)
22.2″ (67CSS)22.2″ (68C)
22.2″ (68C-12SS)G 19.1″ (74C)
18.5″ – 20.5″ (74C-12SS)18.3″ (67C)
17.1″ – 19.1″ (67CSS)18.5″ (68C)
18.5″ – 20.5″ (68C-12SS)H 20.0″ (74C)
20.0″ (74C-12SS)20.0″ (67C)
20.0″ (67CSS)20.0″ (68C)
20.0″ (68C-12SS)Additions to starting controls:
- -12SS: Bolt-on seat depth adjustment.
- 67CSS: 67C control with a seat slider.
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Upholstered back, slim line medium seat. (770)
controls 74C 67C 68C C 19.5″ (74C)
19.5″ (74C-12SS)19.5″ (67C)
19.5″ (67CSS)19.5″ (68C)
19.5″ (68C-12SS)G 17.0″ (74C)
16.4″ – 18.4″ (74C-12SS)16.2″ (67C)
15.0″ – 17.0″ (67CSS)16.4″ (68C)
16.4″ – 18.4″ (68C-12SS)H 19.4″ (74C)
19.4″ (74C-12SS)19.4″ (67C)
19.4″ (67CSS)19.4″ (68C)
19.4″ (68C-12SS)Additions to starting controls:
- -12SS: Bolt-on seat depth adjustment.
- 67CSS: 67C control with a seat slider.
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Upholstered back, slim line large seat. (771)
controls 74C 67C 68C C 21.0″ (74C)
21.0″ (74C-12SS)21.0″ (67C)
21.0″ (67CSS)21.0″ (68C)
21.0″ (68C-12SS)G 16.9″ (74C)
16.3″ – 18.3″ (74C-12SS)16.1″ (67C)
14.9″ – 16.9″ (67CSS)16.3″ (68C)
16.3″ – 18.3″ (68C-12SS)H 21.5″ (74C)
21.5″ (74C-12SS)21.5″ (67C)
21.5″ (67CSS)21.5″ (68C)
21.5″ (68C-12SS)Additions to starting controls:
- -12SS: Bolt-on seat depth adjustment.
- 67CSS: 67C control with a seat slider.
-
Upholstered back, enhanced comfort medium seat. (772)
controls 74C 67C 68C C 20.5″ (74C)
20.5″ (74C-12SS)20.5″ (67C)
20.5″ (67CSS)20.5″ (68C)
20.5″ (68C-12SS)G 17.0″ (74C)
16.4″ – 18.4″ (74C-12SS)16.2″ (67C)
15.0″ – 17.0″ (67CSS)16.4″ (68C)
16.4″ – 18.4″ (68C-12SS)H 20.0″ (74C)
20.0″ (74C-12SS)20.0″ (67C)
20.0″ (67CSS)20.0″ (68C)
20.0″ (68C-12SS)Additions to starting controls:
- -12SS: Bolt-on seat depth adjustment.
- 67CSS: 67C control with a seat slider.
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Upholstered back, enhanced comfort large seat. (773)
controls 74C 67C 68C C 22.2″ (74C)
22.2″ (74C-12SS)22.2″ (67C)
22.2″ (67CSS)22.2″ (68C)
22.2″ (68C-12SS)G 18.2″ (74C)
17.6″ – 19.6″ (74C-12SS)17.4″ (67C)
16.2″ – 18.2″ (67CSS)17.6″ (68C)
17.6″ – 19.6″ (68C-12SS)H 20.0″ (74C)
20.0″ (74C-12SS)20.0″ (67C)
20.0″ (67CSS)20.0″ (68C)
20.0″ (68C-12SS)Additions to starting controls:
- -12SS: Bolt-on seat depth adjustment.
- 67CSS: 67C control with a seat slider.
arm drawings
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4u arm with 6-way adjustment. (-33A, -35A)
seats slim line slim line large extra comfort extra comfort large J 7.9″ 7.9″ 7.9″ 7.9″ K 5.0″ – 8.5″ 5.0″ – 8.5″ 5.0″ – 8.5″ 5.0″ – 8.5″ L 25.9″ 26.7″ 25.9″ 26.7″ M 18.9″ 19.7″ 18.9″ 19.7″ -
Basic height adjustable arm, black finish. (-38A)
seats slim line slim line large extra comfort extra comfort large J 7.9″ 7.9″ 7.9″ 7.9″ K 5.2″ – 7.6″ 5.2″ – 7.6″ 5.2″ – 7.6″ 5.2″ – 7.6″ L 25.5″ 26.3″ 25.5″ 26.3″ M 19.9″ 20.7″ 19.9″ 20.7″ -
Roll back arm. (-39A)
seats slim line slim line large extra comfort extra comfort large J 7.9″ 7.9″ 7.9″ 7.9″ K 4.9″ – 7.3″ 4.9″ – 7.3″ 4.9″ – 7.3″ 4.9″ – 7.3″ L 25.7″ 26.5″ 25.7″ 26.5″ M 20.0″ 20.8″ 20.0″ 20.8″ -
Fixed conference arm. (-49A)
seats slim line slim line large extra comfort extra comfort large J 6.6″ 6.6″ 6.6″ 6.6″ K 5.3″ 5.3″ 5.3″ 5.3″ L 26.2″ 27.0″ 26.2″ 27.0″ M 19.7″ 20.3″ 19.7″ 20.3″ -
8-way adjustable arm. (-51A, -52A, -53A)
seats slim line slim line large extra comfort extra comfort large J 7.9″ 7.9″ 7.9″ 7.9″ K 5.5″ – 9.4″ 5.5″ – 9.4″ 5.5″ – 9.4″ 5.5″ – 9.4″ L 27.6″ 28.4″ 27.6″ 28.4″ M 21.0″ 21.8″ 21.0″ 21.8″
Downloads
pricing
| 4u price list and specification guide | (1.79 MB) |
brochures
| 4u brochure | (3.13 MB) | |
| Education Seating Solutions book | (9.86 MB) | |
| Healthcare Seating Solutions book | (15.64 MB) | |
| Solutions: Seating Collection Overview 2020 | (9.99 MB) |
postcards
| 4u postcard 5x7 | (501.13 KB) |
symbols
| 4u 2D autoCAD files | zip | (4.8 MB) |
| 4u 3D autoCAD files | zip | (38.51 MB) |
| 4u revit files | zip | (3.55 MB) |
certifications
| BIFMA LEVEL 2 task chairs certification | (114.76 KB) | |
| Clean Air Gold certification | (316.89 KB) |
care
| 4u cleaning and care guidelines | (112.58 KB) |
instructions
| base to chair assembly instructions | (308.35 KB) |