CIPA USA Boating Safety Mirror. It features a fully adjustable anti-scratch quick mount plastic bracket that fits square windshields up to 3/4 of an inch thick. The Boating Safety Mirror is designed to universally mount above or below the windshield frame offering maximum rear view with a few simple adjustments. The ability to mount in the down position makes this mirror perfect for boats with walk-thru windshields. The mirror head on the Boating Safety Mirror measures 4.25 x 8 inches and features a convex acrylic safety lens for wide angle viewing and added safety. Each package includes two different anti-scratch mounting plates. One for standard thickness windshield frames (5/8 inch to 3/4 inch) and the other for frames thinner than 5/8 inches. Mirrors are made with non-corrosive materials and are salt spray tested. Features of CIPA USA 11140 Boating Safety Mirror Mounting bracket fits windshields up to 1 inch thick Can be mounted above or below the windshield Head Dimension: 4.25 x 8 inches Features convex acrylic safety lens Made with non-corrosive materials Package Contents: CIPA USA 11140 Boating Safety Mirror CIPA USA 11140: Boating Safety Mirror