Pupil's chair adjustable 3-5

Type 2 adjustable.
Height group 3-5
Seat height 340/380/420
Effective seat depth * (minus 20 mm tolerance)330/360/380
Seat width , at least 290/320/340
Height of the backrest bend line , max 190/200/210
Height of the lower edge of the backrest above the seat , max 150/160
Height of the upper edge of the backrest above the seat , max. 310/330/360
Backrest width , not less than 250/280/300
Curve radius of the front edge of the seat 20-50
Backrest radius in plan view , not less than 300
Seat inclination angle , degrees 0-4
Backrest tilt angle , deg 95-130