Can you side mount these? My 1987 contender has rubber flappers like this but on sides of boat, not the transom.

Hi Ashley, This is intended for transom mount only. We are launching another version in 2 weeks which is intended for Port and Starboard Mount. Please contact us via our website and we can assist further. Best, Mike Engineer Seaworthy Innovations

what is the OD ? and bolt circle dim. ?

Hello, Dimensions are hidden in the 4th picture. We will update the ad to add the dimensions in text as well. 3.12" OD with 2.31" circle pattern for screws. Thank you! Mike Engineer Seaworthy Innovations

is there one or two in the package

Hello, These are sold individually.

Where would I buy silicone seal replacement for this product

Hello, Silicone is a very stable material in the marine environment unlike other rubbers that are used with traditional rubber flapper scuppers. Our seal is also protected from UV light by the stainless steel door. It is designed to last a very long time. However, if replacement is ever needed, simply reach out to Seaworthy Innovations directly via our website. Best, Mike Engineer Seaworthy Innovations

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⚓ Elevate your boat’s defense with premium stainless steel precision!

SLEEK ROBUST DESIGN - Upgraded stainless steel frame and flapper offer a modern, durable alternative to plastic and rubber, elevating your boat’s aesthetic and reliability.
MARINE GRADE DURABILITY - Crafted entirely from 316 stainless steel for unmatched rust resistance and longevity in harsh saltwater environments.
ENHANCED SEALING TECHNOLOGY - Silicone seal and hinged stainless flapper deliver superior water-tight performance compared to traditional rubber flappers.
INSTALLATION FRIENDLY HARDWARE - Includes marine-grade screws optimized for hand-tool installation to prevent damage and maintain corrosion resistance.
PRECISION FIT FOR VERTICAL TRANSOMS - Designed specifically for boats with nearly vertical transoms, ensuring a perfect, leak-proof installation.

The 316 Stainless Steel Boat Scupper Assembly (P/N SW1047) is engineered for boats with nearly vertical transoms, featuring a fully 316 stainless steel construction—including frame, flapper, backplate, and screws—for superior corrosion resistance. Its hinged stainless flapper combined with a silicone seal ensures enhanced water-tightness and durability, outperforming traditional rubber flapper designs. The package includes four marine-grade screws designed for careful hand-tool installation to prevent damage and rust marks, making it a reliable, long-lasting upgrade for your vessel.

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Item Package Dimensions L x W x H	7.05 x 4.65 x 0.71 inches
Package Weight	0.23 Kilograms
Item Dimensions LxWxH	7 x 5 x 1 inches
Brand Name	SEAWORTHY INNOVATIONS
Manufacturer	Seaworthy Innovations

316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper (P/N SW1047)

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