Monoblox surface RP 4:3 is a rear-projection surface from AV Stumpfl’s monoblox series. The surface has an overall size of 386 × 294 cm and a net projection area of 366 × 274 cm, corresponding to a 4:3 aspect ratio and approximately 180-inch diagonal. It uses the R10 surface specification and is supplied as the projection surface only; the frame and stand are separate articles. Article number: BXF-RV386294A1S.