School T-frame chair on a square tube, sizes 4-6

School T-frame chair on a square tube, sizes 4-6 is a student chair for junior and middle grades. The T-shaped support on a square tube combines stability with legroom, while the square frame profile adds rigidity and a clean look. Height adjustment lets a single model fit different size groups within one classroom.

The seat and backrest are made of bent-glued plywood 8–9 mm thick and finished with a clear water-based lacquer; the corners of the seat and backrest and the front seat edge are rounded. The frame is welded from square tubes 25×25×1.2 and 20×20×1.2 mm with a powder coating. Height is set with screws through holes in the frame and leg with a plastic transition sleeve in the 380–460 mm range (sizes 4–6). Plastic caps on the tube ends protect the floor.

The model suits classroom fit-outs.

• Overall dimensions: 380×448×736–816 mm
• Size groups: 4–6, seat height 380–460 mm
• Weight: 4.45 kg
• Seat 380×350 mm, backrest 380×200 mm
• Seat and backrest: bent-glued plywood 8–9 mm, water-based lacquer
• Frame: square tubes 25×25×1.2 and 20×20×1.2 mm, powder-coated enamel. Colors: yellow (RAL1018), lime (RAL6018), grey (RAL7035), graphite (RAL7024)

How does a T-frame support differ from a skid base? The T-frame design has less floor contact and is easier to reposition during cleaning, while a skid base gives a larger support area; both options are stable for daily classroom use.

What student height is the chair designed for? Adjustment covers size groups 4–6 (seat height 380–460 mm) — junior and middle-school students.

How many frame colors are available? Four RAL shades: yellow, lime, grey and graphite, allowing a single color scheme across a classroom or school.