The LED Junction Box and Housing of this Farm LED Utility Luminaires are aluminum and polycarbonate. A junction box is an electrical enclosure that houses one or more wiring connections. The box protects the connections, which usually contain vulnerable points such as wire splices, from environmental conditions and accidental contact. Housing Color is black. The Die cast-aluminum finished in black “E” coat material, no rust or corrode in the harshest environment. It applies in dry, damp or wet environments. The Farm LED Utility Luminaires have excellent heat dissipation effect, and pure aluminum radiator body. This light is IP65+ proof lamp that allows to be used out-door when it is raining. This is ideal for indoor usage in sunless places like a greenhouse, indoor garden, vertical farm, grow tent, etc.