2-piece windshield design which is identical to the ''Custom & Low Boy Heavy Duty™'' but narrower. It''s a combination of traditional Police styling and a custom low profile. Light grey tinted 4mm thick hard coated Lexan® polycarbonate material for superior scratch resistant and distortion free vision. DOT approved in U.S. for night use. Window can be adjusted from 13-1/2" to 15-1/2" high; measured from the top of the headlight to the top of the window. Width is 16-1/2".- Headlight cutout to top of the screen: 13.75-16.25" / 34.9-41.3cm - Width across back at widest point: 16.50" / 42cm- Quantum® hard coated Lexan polycarbonate 4mm thick. Note: Appropriate mounting kit (509570 35mm forks; 500294 39mm forks; 500236 41mm forks) must be ordered separately. Note: This windshield mounts with clamps to the fork tubes between triple trees. They do not fit with tin or aluminum FL style headlight housings.