The ProClass 7-Function Roadside LED Red Rear Trailer Light functions as a tail light, turn signal on the side, brake light, and license plate illuminator and offers built-in reflectors constructed from durable acrylic. It is a replacement light for the left side of your trailer and should be used on trailers under 80 in. wide. It is ideal for multiple styles of trailers where LED lights are desired. The high visibility LED tail light lasts up to 100,000 hours which far exceeds standard incandescent trailer lights. The light features a waterproof, corrosion-resistant housing that withstands extreme weather.