Uses #8 screws. Chrome-plated zinc. Black plastic base. 3 duct threads into neck. Hose clamps not required. Mouth opening: 8'' square. 5-3/4 lx4-3/8 wx2-5/8 H. Series cowl Ventilator 1312DP0CHR per ko cowl Ventilator Uses #8 screws, chrome-plated zinc, black plastic base. 3 duct threads into neck hose clamps not Required, Mouth opening: 8'' square, 5-3/4 lx4-3/8 wx2-5/8 H UPC 066510952093 085226020155 Color black Style Modern Theme modern technology Material Zinc, Plastic Brand Name Perko Model Name PERKO INC cowl ventilator perko cowl ventilator Unit Count 1.0 Count Finish Type Chrome Plated Item Weight 13.6 ounces Manufacturer United Sporting Company Model Number 1312DP0CHR Power Source Passive (No Power Source) Mounting Type Ceiling Mount, Wall Mount Blade Material Plastic Control Method Remote Item Type Name PERKO INC (DP ITEMS) perko cowl ventilator Collection Name Boat Ventilation Equipment Special Features Durable materials, secure fit, and efficient ventilation Electric Fan Design Exhaust Fan Included Components BLOWERS / VENTS / FLOOR DRAINS Is Product Cordless Yes Indoor Outdoor Usage Outdoor Standby Power Shutoff 100% Number of Power Levels 1 Recommended Uses For Product Exhausting Global Trade Identification Number 00085226020155