Single-gang flush-mounted box for flush-mounting, R.8, red. Square flush-mounted device box for masonry with plaster protection, dimensions (W x H x D) 92.5 x 92.5 x 64 mm, color red, for the Berker R.8 switch range. Box-in-box installation for the required square flush-mounted box, dimensions (W x H x D) 84 x 84 x 60.5 mm, color gray. Note: The matching flush-mounted box (color gray, 1-gang to 4-gang) is not included.