Perko 0870DP0CHR, Cowl Vent, ChromeCondition:* New, Old Stock, Never Put Into Service. No OEM Packaging. As Pictured.Additional Notes:* Cowl Vent* Chrome Plated Zinc Alloy Cowl with Black Perko Kote Base* Installs: 3 Duct Threads into Neck, Hose Clamps Not Required* Dimensions (LxWxH): 5-1/8 x 4 x 3-7/8* Cowl Opening: 7-1/3 Square Inches* Screw Size: #10Perko0870DP0CHR