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For cleanroom and ESD applications ranging from ISO 3 to ISO 8; features the industry's only phthalate- and fire-retardant-chemical-free vinyl upholstery.

Ergonomic upholstered seat with forward sloping edge and Integral foam bumper guard. Seat measures 20.5" wide. With 5/8" thick (9-ply) seat board. Nominal foam thickness 2" with 4° rearward angle. Functional seat depth of the 1F seat is 18".

Also known as "C1-K". Appropriate metal parts are chrome-plated. All chair parts are selected to assure ISO class 3 clean room compatibility, plus ESD treatment as described in performance package "K”.

Backrest height adjustment feature allows for adjustment up or down 3", quickly and securely (without the use of a noisy ratchet mechanism). Back measures 17.5" wide by 15" tall with 3/8" thick (5-ply) back board and 1.5" foam thickness. 4mm (5/32") thick polypropylene back panel with edge guard.

Large, five-legged, solid cast aluminum base with caster-to-caster diameter of 28.7" and maximum width of 27.4". T-cross-section legs ensure cleanability, and endure test loads of 1.5-2x BIFMA strength requirements. Features standard 50-mm tapered hub (1° 26' 16" (Morse) taper) with gauge line elevation of 113mm from the caster insert plane. The base is cast out of UNI EN 46100 aluminum with a robotically polished top surface to ensure quality and consistency.

For medium height work surfaces such as workbenches 31" to 38.5" high. Provides a range of 19" - 26.5".

Two inches in height, with dual soft-wheels. Casters resist movement when the seat is unoccupied. Plastic collar around caster stem to match base. Black tread indicates an ESD caster.

Control allows function of the seat height activation, backrest adjustment, and seat tilt adjustment by means of easily engaged levers which can be activated from the seated position. Seat tilts 6° rearward; 4° forward; backrest tilts 8° forward; 13° rearward. Tilt adjustments can be locked in place or be left to free float.