Monoblox rear-projection surface from AV Stumpfl’s monoblox series, designed in a 4:3 aspect ratio with an R10 surface gain code. The overall screen dimensions are 691 × 523 cm, while the usable projection area measures 671 × 503 cm. This product is supplied as the projection surface only; the corresponding frame and stand are separate articles. The manufacturer’s article number is BXF-RV691523A1SD, and the net weight is 17 kg.