This is a rectangular 3rd brake light with a 6 inch wide lens. 2 inch low profile. Requires 2-1/2 inches of clearance. Flush mount lighting is designed to be flush with your paint. The lenses are 1/4" thick and will be sanded to match the body panel. The face plates are mild steel. Pictured sequenced instructions are included. This is made to match our Hagan flush mounted taillights.