Sitmatic Big Boss 391


Big Boss 391 SY + 7K

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Seat Depth: 23.75” – 26.25”
Seat Width: 24”
Seat Height: 16 – 20.5”
Back Adjustability: 6”
Back Height: 22.75” – 28.75”
Back Width: 22.5”
Arm Width (horizontal – in & out adjustment): 2” range per side for +1N armrest option (width adjusts by fingertip lever; 6 positions; 10” long by 4”)
Arm Height (vertical – up & down adjustment): 4” range for 1N armrest option (height adjusts by fingertip lever; 10 positions; 10” long by 4”)

Weight Capacity: 400


We currently offer free shipping local shipping for orders of $250.00 or more for office supplies.

Return & exchange
General Office Supplies can be exchanged within 14 days. All furniture and PPE items are non-refundable. More info.

Contact us at +1 (323) 776-9107, or email us at

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