Electrical boxes house electrical connections for switches, outlets, light fixtures, and wires. There are several types of boxes including wall boxes for switches and outlets, ceiling boxes for anchoring lights, and weatherproof boxes for exterior use. Wall boxes can be plastic, metal, or gem style and come in various sizes. Ceiling boxes are octagonal or round and mount lights. Weatherproof boxes have rubber gaskets to prevent water intrusion. Wall plates cover box openings.