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Ships within 48 hours · Estimated delivery Aug 3 - Aug 8
Stamped 304 stainless steel cover
Power port allows for quick thru-hull connection to a Cannon downrigger power cable
Most advanced formula available
NEMA configured inlet
Fits standard size threaded handles
Sierra Exhaust Flapper 4" 18-4457 | 26 CWB Board Co Stamped 304 stainless steel coverSierra Exhaust Flapper #18 4457 Size 4" Complete with Stainless Steel Clamps. Premium Protector Valves for wet exhausts are made of 100% durable EPDM that is extremely resistant to UV light, ozone, heat, and weather aging. For salt or fresh water. It will give the boat's exhaust system dependable protection in any harsh marine environment.
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