Sitmatic Beta² Mid Back
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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 their components in California, producing incredibly well-engineered Italian-built quality seating. All of the chairs in their Beta² Series 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 mid-back ergonomic chairs. The Sitmatic mid-back Beta² office chairs are highly customizable, so please contact us if you don't see what you need here. They can be built for both ESD and Cleanroom environments upon request.
- 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 of this mid-back ergonomic office chair hugs and supports the back from the lumbar to the thorax
- Intuitive QuickBack allows you to move the backrest through an unprecedented 6" range in 27 increments
- Armless standard with 2 arm options
- Premium Black Polished 24" Aluminum Base
- Synchro or Multi-function mechanism
- Can be built for both ESD and Cleanroom environments upon request
- Lifetime structural warranty, 10-year warranty on worn components, and 5 years on electrical components
Mechanism

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




- Overall Dimensions Armless:
- 24" W x 24" D x 30”-34”H
- Seat Width:
- 19"
- Seat Depth:
- 18"
- Seat Height:
- 16.25-20.25"
- Back Width:
- 15.75"
- Back Height:
- 13.75"
- Base Diameter:
- 24"