This dry lining box features a 1-gang design and comes with two side cable entry points and a 25mm base knockout, making installation a breeze. The adjustable lugs have large bearing faces for added strength and are made from a flame-retardant thermoplastic material for durability. This back box is designed for board thicknesses between 6.35mm and 15mm and is available in two internal depths: 35mm and 47mm.