Multi-seat armchair section with metal frame

Dimensions:
centre-to-centre distance not less than 490 not more than 520 mm
width of 3-seater section: not less than 1510 not more than 1600 mm
height from the floor to the upper edge of the backrest at least 900 at most 950 mm
chair depth with the seat lowered at least 580 at most 620 mm
depth of the chair with the seat raised not less than 450 not more than 470 mm
total thickness of the backrest at least 70 mm, thickness of the seat at least 80 mm
3-seat section consists of two uprights, four open sides with applied beech armrests, support beam, three backrests and three folding seats.
The upholstery fabric is velour, density 305 g/m2, abrasion resistance not less than 35000 according to Martindale. The fabric is triplicated with 3mm PPU. The fabric should have dirt-repellent properties, allowing dry cleaning, with increased wear resistance, durability. The colour of the fabric as agreed with the customer.
Armchair frame: welded, steel should consist of a horizontal beam, vertical posts and supports. Beam 50*25 mm and uprights 40*20 of box profile, with...