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DK Hardware Professional Tax Exempt? Net 30? - DK Net Terms
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30 Days Easy Return. We are the largest supplier of the most adaptable, personalized hardware in the industry. We work hard to ensure you're satisfied with our products.
WARNING: This Product May Contain Chemicals Known to the State of California to Cause Cancer or Reproductive Harm. To Learn More Visit P65Warnings.ca.gov
Features
- Fiberglass thru-hull construction is non-corrosive
- Weighted rubber flaps repel back flow surges caused by waves, following seas or backing down
- Wide mounting flange provides extra surface for bedding material; ideal for installations close to the waterline
- Class 1 fire retardant resin to stand up to heat and prevent the spread of fire
- Available for 3" and 4" exhaust systems
- Replacement flap kits are available
- Hose Size: 3", 4"
- Dimensions 3": 4 7/8" dia flange (3" hose) x 5 1/2"L (3" from flange inboard)
- Dimensions 4": 5" dia flange (4" hose) x 7 3/4"L (4 1/2" from flange inboard)
- Approvals: ISO 9001:2008, Lloyd s Register, ANAB, UL94V-0 flame retardancy
Type
Thru-Hull Fittings
Dimensions
3" Outside Diameter x 5.50" Length
Material
Fiberglass
Product Overview
A great way to reduce risk of backflow in 3in. and 4 in. exhaust systems. Exhaust flappers are an effective way to protect the engine from water that surges back into the exhaust system. Centek thru-hull flappers are constructed of a compression molded fiberglass to eliminate corrosion issues and feature a 7/8" wide flange to provide more than adequate bedding surface for installations close to the waterline. A weighted rubber flap allows exhaust and cooling water to escape freely and closes off to the back-flow of sea water. The combination of rubber flap and fiberglass thru-hull makes operation silent. Available for 3" and 4" exhaust systems.