DURABLE THERMO-PLASTIC FLAPPER ENSURES LONG-LASTING PERFORMANCE - Crafted from high-quality thermo-plastic, our scupper valve flapper is resistant to sun and chemical damage, providing reliability in harsh marine conditions without curling or rotting. EASY INSTALLATION FOR ALL BOAT OWNERS - Designed for hassle-free installation, this flush mount scupper valve mounts easily over 1" to 1-1/4" drain tubes or directly to a 1 1/2" thru-hull, allowing even novice DIYers to achieve a perfect setup. UNIVERSAL COMPATIBILITY MAKES REPLACEMENTS A BREEZE - Our replaceable scupper assembly features a universal hole pattern, allowing it to retrofit many existing systems. Upgrade your boat's drainage without any complications or extra modifications. OPTIMIZED DRAINAGE PREVENTS WATER BUILDUP - Engineered to fit over 1"-1 1/4" drain tubes, our flexible scupper adapter features a grooved interior for a secure fit that enhances drainage efficiency and prevents unwanted water accumulation on your deck. SUPERIOR CURL-PROOF DESIGN ELIMINATES LEAKS - Our innovative curl proof flapper design ensures that your marine drainage system operates flawlessly. Enjoy your time on the water with confidence, knowing leaks and clogs are a thing of the past. CONSTRUCTED FOR MAXIMUM RESILIENCE IN MARINE ENVIRONMENTS - Our premium marine equipment stands up to wear and tear, thanks to its durable construction, providing a long-lasting, reliable solution that boat owners can trust for years to come. SECURE FIT FOR ADDED PEACE OF MIND - The solid attachment of the flush mount assembly to your vessel ensures a stable component that won’t shift or leak while you're out at sea. Experience a reliable solution designed for active marine lifestyles.