FLAT 01 is available in high or low backrest version. Multi-layer wood seat with non-deformable flexible polyurethane padding, protective seat casing in black polypropylene. Back with tubular steel support frame covered with STRICKTEX transpiring elasticized mesh in black or grey fire-retardant Trevira CS. Fixed closed or T-shaped armrests or adjustable to 2D (height and depth). A mechanism allows the back to be locked into 4 positions or with permanent contact, anti-shock release device, backrest resistance adjustment according to user’s weight. Synchronized tilting device for seat and back with 5-position adjustment, anti-shock back release device, backrest resistance adjustment according to user’s weight. Height adjustable gas-lift seat. The backrest of the task chair is equipped with a height-adjustable lumbar support. Five-spoke base in nylon with central reinforcement in zinc-coated steel or five-spoke base in polished pressure die-cast aluminium. Standard dual-tread self-locking swivel castors Ø 50 mm, for floors with fitted carpets or linoleum. Frame with 4 legs and tubular steel structure, Ø 25 x 2 mm, with rubber supports and chrome-plated or black lacquer finish. Slide frame with tubular steel structure, Ø 25 x 2 mm, with non-slip glides, with chrome-plated or black lacquer finish.