Made with environmentally friendly materials that do not harm the marine ecosystem. 【Multiple Application】Our 3” boat vent duct is an ideal bilge blower hose fan exhaust, or in the galley and engine compartment, also compatible with boat toilet bathroom exhaust fan ducting or dryer exhausts. Keep air circulating with our marine exhaust hose. Material: Polyvinyl Chloride (PVC). Batteries Required?. Batteries Included Also fits well with 3 inch dryer vent hoses and other similarly sized vent hoses. Replacement: This bilge blower 3 inch is designed as a perfect replacement for boat blower hoses and marine exhaust hoses, ensuring optimal performance and compatibility with 3-inch flexible ducts. 3 Black Marine Bilge / Vent Hose - Hardin Marine Vent/ Bilge Blower Hose - 3" - $/FT – Rigging Shoppe Package Contents: Includes one 10-foot marine exhaust hose with a 3-inch diameter, providing ample length for most applications. Waterproof and Eco-Friendly: Utilizing advanced sealing technology, it effectively prevents water penetration and protects the interior from water damage. Keep air circulating with our marine exhaust hose. Bilge Blower Hose 2 Pcs Boat Blower Hose, Boat Vent Bilge Blower Benin Boat Dryer Vent Hose 【Easy Installation】Our bilge fan hose comes in 10 feet marine exhaust hose, featuring a 3-inch diameter, making it ideal for any install.