Polyester finished coloured aluminium frame, available in 5 colours. Rounded corners, 10 % fibreglass. Sides: RAL 9002 grey steel. Very strong plexiglass set on silicone, waterproof. Pneumatic jacks. Safety: turnable hinges integrated in the frames for better security. 2 point safety lock. 4.4 cm thick (useful 2.4 cm). H 101 x W 137 cm., suited for 18 sheets.