Our Black Nickel raised plate range are beautifully crafted with a sleek profile. Each plate has a polished black, shiny finish. Plate Dimensions. 1 Gang Plug Socket - 88 x 88 x 8mm. 2 Gang Plug Socket - 148 x 88 x 8mm. Fits into a 25mm - 35mm standard UK wall back box. Product Details. Finish: Black Nickel. Supplied with colour coded fixing screws & plastic gasket. Full fitting instructions included. All Finishes Available: Polished Chrome, Satin Chrome, Antique Brass, Satin Brass, Polished Brass, Matt Black, Black Nickel, Pearl Nickel & Stainless Steel. Long-life design and unprecedented value for money make this the ultimate product for you. All items in this range are tested and approved to BS1363 offering assured quality and safety. For peace of mind these items come with a 10 Year Guarantee.