The AV Stumpfl Inline-Motor Strato 4:3 is a complete stationary roll-up projection screen with a 490 × 370 cm overall size and a 16 × 16 cm aluminium casing. It includes the frame, stand and STRATO projection surface, made from coated non-woven glass fibre with a matt-white finish and gain 1.0. The screen uses a fast, silent 230 V tube motor with an electromagnetically released disk brake and overtemperature protection.