FOR TRAILERS UNDER 80'. Waterproof, air trapping, submersible design with large Lexan rectangle lens. Works like inverted water glass. Black body, right side. Bulb side with built in dust and splash guard with Hi and Dry terminals. Snaps out for serviceable, no tools required bulb replacement. Sonically sealed, no gaskets to leak or inventory. Replace any standard 2" mount. Complies with Federal legal requirements. 5 year submersible warranty.