The Electrical Outlet Box Extender, Spark Guard 1-Gang, is a white plastic wall-mounted extension box with a single outlet. It comes with wall plates included and features a waterproof design, making it suitable for electrical wiring applications. With a compact size of 1 gang, this product from Mai Work House is manufactured by Arlington Industries and does not require batteries for operation. It weighs 2.89 ounces and has dimensions of 9 x 2.3 x 4.2 inches, providing a reliable solution for expanding electrical outlets in walls.