The Audac CF45S/B is a single cover frame in black for flush-mounting one standard 45 x 45 mm module in a wall. It is part of Audac's 45 x 45 mm installation system, used in commercial audio installs such as restaurants, hotels, offices, schools and sports facilities, and frames products such as the MWX45 matrix wall panel controller, the VC3036 100 V volume controller, the VC3208 remote volume controller and Audac's CP45 connection plates (XLR, RCA, HDMI, VGA, BNC, RJ45 and speaker plates). The frame comes with a metal subframe; it fixes with screws. Its outer dimensions are 85 x 85 x 20.8 mm and it weighs about 30 g. Audac makes the same frame in white (/W) and in a double size, and for flush mounting in walls it is combined with Audac's WB45 installation boxes. Only the frame (with subframe) is supplied; the wall panel or connection plate it holds is sold separately. Audac now lists newer 'I' versions of these frames with 80 x 80 mm outside dimensions, so this is the original 85 x 85 mm model.