New ¾-inch Permalite XT round LED marker/clearance lights are PC2 rated, meaning they are visible from up to a 90-degree angle. They are meant for vehicles over 80 inches wide.  

The lights use a Boardfree design with a single LED that is sealed in a compact acrylic housing to protect against damage from moisture intrusion, harsh chemicals and ultraviolet rays. Mounting accessories, sold in addition to the lights, include either a grommet or an anti-theft ring. 

Permalite lamps are marketed by Phillips Industries.

Originally posted on Trucking Info