Design: Award-winning telescoping gas-lift sit-to-stand chair — an extension of the 4u series designed by S.I. Design. Engineered with ergonomic tilt and seat depth adjustment for unmatched comfort at every height across a 7 1/4 inch vertical range.
Materials: 4-way stretch elastomeric mesh back over high-density comfort foam seat, matte black or white steel framework on a 5-star base with telescoping gas-lift cylinder.
Weight CapacityUp to 300 lb.
Dimensions: Measuring approximately 26 inches in width, with a seat depth of 18 inches and a true sit-to-stand seat height range of 20 inches to 27 1/2 inches and a maximum overall height of 46 1/2 inches.
Customization: Mid-back mesh with roll-back arms, matte black or white frame, 5-star base in black or white. Quick-adjust synchro, forward tilt, seat depth adjustment, 5-position tilt limiter, and back tension control. ANSI/BIFMA X5.1, BIFMA LEVEL 2, and CLEAN AIR GOLD certified.
The 4-UP combines award-winning telescoping gas-lift engineering with ergonomic dual-height support, making it an excellent choice sit-to-stand desks, active workspaces, and ergonomic workstations.