4-UP

Discover 4-UP, the true sit-to-stand experience with dynamic, telescoping gaslift. Unlike solutions before only allowing a user to sit or perch, this revolutionary seat allows users to tap into the full functionally of their sitto-stand desk. With 4-UP, a person can sit, stand & access every position in between. Combined with a seat depth adjustment, ergonomic forward tilt & Via Seating’s proprietary injection-molded comfort foam, it is no wonder 4-UP was the first ever Best of NeoCon Business Impact award winner for an ergonomic desk chair.

 

See also the 4u series.

SPEC IT & QUOTE
4-UP with mesh back in an open office with sit-to-stand desks.
Application: 4-UP with mesh back in an open office with sit-to-stand desks.

Options & Colors

Click the + signs or words below to see details on each option including frame colors & mesh.

Framework
Back Styles
Mesh

Mesh

Groove

Groove

Upholstered

Upholstered

Seat Styles

All 4u seats use Via Seating’s comfort foam. This is a proprietary blend of high-density, injection-molded, closed-cell, cold-cured comfort foam  so durable and lasting it is backed by Via Seating’s 12 year warranty. Unlike traditional stacked foam pieces, Via’s seats are contoured to maximize comfort and support where needed with a circulation supportive waterfall edge.

Enhanced comfort medium (B)

Enhanced comfort medium (B)

Adjustable Lumbar Options
Optional black adjustable lumbar support #LS4B

Optional black adjustable lumbar support #LS4B

Guide: watch | pdf

  • Vertical position adjustment
  • Available on mesh or groove backs
Optional white adjustable lumbar support #LS4W

Optional white adjustable lumbar support #LS4W

Guide: watch | pdf

  • Vertical position adjustment
  • Available on mesh or groove backs
Adjustable lumbar support integrated in upholstered backs

Adjustable lumbar support integrated in upholstered backs

Guide: watch | pdf

  • Lumbar depth adjustment
  • Available on mesh or groove backs
Upholstery Layouts
Single upholstery

Single upholstery

Two-tone upholstery #U2:

Two-tone upholstery #U2:

  • 1 textile for seat
  • 1 textile for back

Available on upholstered backs only

Arms
Arms
Standard armless #0A

Standard armless #0A

Black roll back arms #39A

Black roll back arms #39A

Guide: watch | pdf

  • Height adjustment (up/down)
  • Roll back feature

Control Mechanisms
Synchro Mechanisms
Quick adjust synchro + limited seat depth adjustment + forward tilt #67C-LS-FT

Quick adjust synchro + limited seat depth adjustment + forward tilt #67C-LS-FT

Guide: watch | pdf

  • Height adjustment (up/down)
  • Tilt limiter (5-position)
  • Back tension
  • Seat depth adjustment
  • Forward tilt
Telescoping Gas Lift
Sit-to-stand telescoping gaslift with a footrest #11TDR

Sit-to-stand telescoping gaslift with a footrest #11TDR

Control Guide: watch | pdf

Coming soon!

Bases
5-Star Swivel Base Options
Black 5-star base #18BB

Black 5-star base #18BB

White 5-star base #18WB

White 5-star base #18WB

Caster Options
Black carpet casters #16HP

Black carpet casters #16HP

Black carpet casters + safety brake #16HP-SL1

Black carpet casters + safety brake #16HP-SL1

Safety brake feature that locks the caster when the user gets out of the chair

Grey-black all floor casters #16SCG

Grey-black all floor casters #16SCG

Grey-black all floor casters + safety brake #16SCG-SL1

Grey-black all floor casters + safety brake #16SCG-SL1

Safety brake feature that locks the caster when the user gets out of the chair

Glide Options
Black glides #16GL

Black glides #16GL

Colors
Frame Colors
Matte black #B

Matte black #B

Matte white #W

Matte white #W

Standard Mesh Colors
Black mesh #01U

Black mesh #01U

Details: here

Graphite mesh #03U

Graphite mesh #03U

Details: here

Stardust mesh #02U

Stardust mesh #02U

Details: here

Patented Copper-Infused Mesh Colors
Black copper mesh #11U

Black copper mesh #11U

Details: here

Natural copper striped #13U

Natural copper striped #13U

Details: here

Groove Colors
Black groove #01UG

Black groove #01UG

Details: here

Dark grey groove #02UG

Dark grey groove #02UG

Details: here

Light grey groove #03UG

Light grey groove #03UG

Details: here

 

Note: Material images are representational. Lighting, paper type, monitor screen settings and other factors can alter the virtual appearance of any material sometimes significantly. To best compare a material to the setting it will be used in, please request a free sample by clicking any of the images above or by visiting promo.viaseating.com .

Sustainability

Responsibly Made

DfE Lead Design →

DfE Lead Design →

All Via Seating products follow the Design for the Environment (DfE) design approach . During this process, all components are screened to identify and assess the human and ecosystem health impacts of chemicals of concern. We screen all product components to the ANSI/BIFMA e3-2019 Annex B- List of Chemicals of Concern and the California Proposition 65 List.

Vigorous Testing →

Vigorous Testing →

Our products are annually assessed by a 3rd party team of chemists & globally-recognized ISO 17025 accredited lab. They are rigorously tested for conformance to ANSI/BIFMA e3 standard credits 7.6.1, 7.6.2 and/or credit 7.6.3 as well as conference to low-emitting materials. Prior to product launch, every product is continuously developed testing its functionality & durability within Via Seating’s ISO 17025:2017 accredited lab .

Environmental Impact →

Environmental Impact →

All Via Seating products are BIFMA LEVEL® certified. LEVEL® is an evaluation and certification system for environmentally-preferable and socially-responsible office furniture. 3rd party certification is achieved by conformance to a multi-attribute standard created by the Business and Institutional Furniture Manufacturer’s Association (BIFMA) that evaluates product impacts across categories including Materials, Energy, Human Health and Social Responsibility.

End of Life ↺

End of Life ↺

Via Seating provides accessible care guidelines that help maintain the quality of every product and easy-to-follow disassembly instructions when a product reaches the end of its life.

S.I. Design team.

S.I. Design & Studio V

4u: In 1996 Lorenzo founded S.I. Design with designers Mirco Pegoraro 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.

 

The dynamic telescoping gas lift with quick adjust advanced synchro, seat depth adjustment & forward tilt was designed by the Studio V team.

Meet S.I. Design