Monoblox surface RP 21:9 is a rear-projection surface from AV Stumpfl’s monoblox series. It has an overall size of 325 × 149 cm and a net projection area of 305 × 129 cm. The surface uses the R10 gain designation and is supplied as the projection surface only; the corresponding frame and stand are separate articles. The net weight is 2.5 kg, and the manufacturer article number is BXF-RU325149A1ID.