Monoblox surface RP 4:3 is a rear-projection surface from AV Stumpfl’s monoblox series. The surface has an overall size of 325 × 249 cm and a net projection area of 305 × 229 cm, corresponding to a 4:3 aspect ratio and 120 × 90 in projection area. The R10 SID surface code identifies the supplied projection material. The frame and stand are separate articles and are not included with this projection surface.