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4u Ergonomic Mid Back Mesh Office Chair

780-W-67C-SS-FT-52A20R-18WB-16SCG-LS4W-01U-9FA-GR 1 (HUE BLACK)
Short Description:
4u is an exceptionally comfortable mesh back ergonomic task chair loaded with features. Select from slim or enhanced comfort upholstered seat pad.
12 Year Warranty Free Shipping Made in USA

4u Ergonomic Mid Back Mesh Office Chair

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4u Ergonomic Mesh Back Office Chair

4u by Via Seating is the perfect balance between form, function and value. This mesh back ergonomic chair features is loaded with standard ergonomic features such as build-in lumbar, five star swivel base, fully adjustable arms, and casters suitable for carpet and hardwood floors. Select from a slim line or medium enhanced seat to dial in your comfort level.

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. Both white and black frames are available with matching arms and bases. 

  • Integrated, adjustable lumbar support
  • Two-toned soft rubber tread all floor casters
  • 8-way fully adjustable arms with 4D rotating armrests
  • Seat depth adjustment & ergonomic forward tilt
  • Quick adjust advanced synchro control mechanism


  • ANSI/BIFMA X7.1-2011 (R2016) Standard Method equivalent to 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).





Dimensions & Measurements

Weight limit 400 lbs


Key Features

  • Mesh backs: 4-way elastomeric stretch mesh in monochromatic solid colors
  • 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.
  • Control mechanisms: full function ergonomic synchro control mechanism with easy to use side tension adjustment.
  • Bases: five-star bases available in black nylon and white nylon

designed by S.I. Design

4u is a cutting edge Italian seating series designed by S.I. Design.


Care & Maintenance


Mix mild soap and warm water together and using a lint-free cloth, damp it a little bit into the mixture. Dab gently where the stain is located. Use a different, dry, lint-free cloth to dry the area. Repeat if needed.


To prevent overall soil, frequently vacuum and lightly brush the best to remove dust and grime buildup. Spot clean with mild soap and water. Infrequent use of a 1:100 bleach to water solution can be used for disinfection of the mesh. The accumulate wet contact time should be limited to a maximum of two hours over the life of the chair. Regular bleach cleaning of this mesh is not recommended.


To get the most out of your casters, it is always good to keep them as clean as possible. Once a month, gently flip your chair over and carefully use tweezers to remove all dirt/hair/debris out of the creases of the caster. Use a lint-free cloth with your preferred cleaning agent and clean the caster thoroughly. Thoroughly dry the caster with another lint-free cloth after.



All Via Seating products are warrantied for 12 years—including 24/7 use chairs—except  where noted. Unless otherwise specified, Via Seating’s proprietary, closed-cell cold-cured, injection molded foam is also warrantied for a period of 12 years.


(not covered under warranty)

• Normal wear and tear, abuse, misuse neglect, items with alterations, unauthorized repairs, damaged by fire, flood or other acts of God will not be covered.

• Puddling or wrinkling of Non-Stock fabrics, leather or vinyl.

• Graded-In, COM/COL textiles.

• Color-fastness or matching of colors patterns or dye lot, including; minor variations, color matches to swatches used for specification purposes and/or prior purchases.

• Products specified outside of those shown in this price list.

• Products with unauthorized repair or alteration.

• Products not cleaned, used maintained or installed in accordance with Via Seating’s applicable guidelines.

• Products exposed to conditions deemed extreme.


8-Way Arms
Rotates in 15° and out 15°. Slides forward 1.5″ and back to its resting position.