Junction box type 4X constructed of molded fiberglass polyester with lift-off cover and screws. Enhanced UV inhibitors protect against outdoor weathering. 10-32 threaded brass inserts are provided for optional inner panel. Captive oil resistant gasket provides a positive seal. Designed for use as instrument enclosures, electric, hydraulic or pneumatic control housings, electrical junction boxes or terminal wiring enclosures. Provides outstanding insulation and protection where equipment may be hosed down or be very wet.