As an Amazon Associate, we earn from qualifying purchases. Home » AUTOMATIC » FLAPPER Automatic Flapper Drain Plug Set AUTOMATIC . FLAPPER Attributes Brand name, Manufacturer name, ManufacturerAUTOMATIC KnownMan, Extra Product Name, manPlusMpnAutomatic Flapper Drain Plug Set keywordsnational supply direct, marine goods, home goods, camping, outdoor, direct goods moq, multiple, tierMinQty11 MPNFLAPPER qtyInStock0 SKU617989 snippetFlapper will automatically allow for water to drain from the hull when boat is under wayWater tight seal when the boat is at a stopFlexible neoprene plug inserts in the transom drain hole tierPrice126.13 Distributor offers SellerSKUMOQIn stockMultiplePrices nationalsupplydirect.com617989111 @ $26.13