184457 Sierra Marine Marine Exhaust Water ShuttersManufacturer: SIERRAMARINE Availability: 27 in stockSKU: S5M18-4457184457 Sierra Marine Marine Exhaust Water Shutters $34.35 Qty: Add to cart Ship toSelect countryUnited States of America *Other *Shipping MethodNameEstimated DeliveryPriceNo shipping optionsApply Custom wishlist OKAdd to wishlistAdd to compare listEmail a friend1:Shields Exhaust Protector Valves have a specially compounded rubber flapper valve designed to prevent water from entering the exhaust system in following seas or when backing down. The product is made of weather resistant EPDM with a UV stabilizer.External Flapper4 InchEPDMWith Stainless Steel ClampShields Exhaust Protector Valves have a specially compounded rubber flapper valve designed to prevent water from entering the exhaust system in following seas or when backing down. The product is made of weather resistant EPDM with a UV stabilizer.