The AV Stumpfl Monoblox surface AP 4:3 is a front-projection surface with an R10 surface gain code and a 4:3 aspect ratio. It is supplied as the projection surface only; the corresponding frame and stand are separate articles. The overall screen dimensions are 691 × 523 cm, with a net projection area of 671 × 503 cm. The surface has a net weight of 13.7 kg and is identified by article number BXF-AV691523A1ID.