Switch Boxes of BS standard are designed for mounting switches, devices, or receptacles in masonry walls. With fixed ears and adjustable ears, also can provide earthing screw. Various specifications are available, thickness is up to the customers' requirement. Material: Galvanized steel plate Standard: BS4662 Finish: A) Boxes can be with brass earth terminal or iron earth screws. B) Boxes can be with fixed installation lug or adjustable lug. C) Boxes are available in mixed 20mm & 25mm knockout holes.