182727 Sierra Marine Marine Exhaust Water ShuttersManufacturer: SIERRAMARINE Availability: 7 in stockSKU: S5M18-2727182727 Sierra Marine Marine Exhaust Water Shutters $32.21 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 Flapper3 Inch Length x 3.780 Inch WidthRubberShields 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.