Sitmatic, originally an Italian based furniture manufacturer, specializing in drafting stools, has become an industry leader in proper ergonomic design. They design and manufacture all of their components in California, producing incredibly well engineered, Italian build quality seating. The Beta² Series, all of their chairs, have steel frames and components that allow them to boast “no weight limits”, meaning that they support any user. This, along with their lifetime component warranty, speaks to the quality of these chairs. Sitmatic chairs are highly customizable, so please contact us if you don’t see what you need here.
- No weight limit, rated for 24 hour use
- PressureCast Seat Foam: PressureCast foam cushions are used rather than cut foam to ensure seating comfort
- Optional Air Lumbar Support: The scientifically engineered shape hugs and supports the back from lumbar to thorax
- Intuitive QuickBack allows you to move the backrest through an unprecedented 6″ range in 27 increments
- Cast Aluminum Base is stronger and more durable than comparable plastic bases and is easier to recycle
- Armless standard with 2 arm options
- Sync or Multi-function mechanism
- Lifetime structural warranty, 10 year warranty on wear components and 5 years on electrical components
Mechanism: Sync or Multi-function
SN Sync The entire chair rocks in a synchronized free-float mode; backrest reclines 20° (90° to 110°) while the seat reclines 9° (0° to -9°). Tension adjustable. Lockable in 6 different positions. Backrest height adjusts 6 inches into 27 different positions using an intuitive, visible lever. Seat depth adjusts 2½” in 6 positions. Seat height adjusts pneumatically.
Multi-function Center tilt rocking mode. Backrest angle adjustable 16° (89° to 105°). Seat angle adjusts 7° (-5° to 2°). Tension adjustable. Lockable in 6 different positions. Backrest height adjusts 6 inches into 27 different positions using an intuitive, visible lever. Seat depth adjusts 2½” in 6 positions. Seat height adjusts pneumatically.

Arm Options
+1A: Arm height adjusts 4” into 10 different positions. Arm width adjusts 2” per side into 6 different positions. Height, Width, 360° Pivot, Contoured Caps
+6K: Arms swing back and out of the way. Arm height adjusts 3” into 6 different positions. Foldable, Height, NO PIVOT, Soft Gel Caps

Air Lumbar: Inflatable Lumbar Bolster


















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