Our Black Nickel Screwless range is beautifully crafted with a slim 3mm profile. Each plate has no screw holes visible on the front plate as this clips onto the back plate once that has already been screw mounted onto the wall. Plate Dimensions. 1 Gang Plate - 86 x 86 x 3mm. 2 Gang Plate - 148 x 86 x 3mm. Fits into a 25mm - 35mm standard UK wall back box. Product Details. Full fitting instructions & screws included. All Finishes Available: Polished Chrome, Brushed Chrome, Black Nickel & Copper. All items in this range have certification for CE; LVD; EMC; RoHs offering assured quality and safety. For peace of mind these items come with a 2 Year Guarantee.