Adjustable pupil's chair "Extra P plastic SIGMA", gr. 4-6, 5-7, article ST-01

Adjustable pupil's chair "Extra P plastic SIGMA" gr. 4-6, 5-7, article number ST-01. The height of the chair is adjustable and corresponds to the height group: 4-6 (380-420-460 mm), 5-7 (420-460-500).
The lower part of the frame is made of thin-walled cold-rolled, electrically welded pipe. The upper part of the adjusting mechanism is made of thin-walled, electrically welded pipe. The upper part of the chair frame is made of cold-rolled, electrically welded flat-oval tube, the tube is equipped with inner plugs of appropriate size at the ends. Stiffness of the frame is provided by a crosspiece made of thin-walled electric-welded pipe, the crosspiece is fixed by welding between the support legs.
To ensure the strength and elasticity of the frame, two stop strips are installed under the seat. The support leg is arc-shaped with an inner radius.
The backrest and seat are ergonomically shaped plastic with anti-slip zones. The entire surface of the seat and backrest is matt with a fine relief to reduce the visibility of scratches during ... .