ML Knightsbridge's black nickel screwless SF8341BN wiring accessories feature a screwless slim plate design with just a 4.3mm projection. All feature matching metal rockers and an integral gasket to prevent moisture transfer between the wall and plate. Constructed from premium grade components. 1 gang 20A double pole switch Premium grade steel construction - black nickel finish Fitted with moisture-shielding gasket to protect plate Earth terminal fitted Requires 25mm minimum depth backbox Terminal capacity: 3 x 2.5mm² or 2 x 4.0mm² BS EN 60669-1 Dimensions (H x W x D): 87.5 x 87.5 x 4.3mm