Satin Finish Billet Aluminum Self-Bailing "J" Drain
These billet aluminum self-bailing bilge drains are designed to attach to the back of the hull over the drain hole.  By incorporating a one-way rubber style flap they allow water to exit the boat while underway, yet restrict the water from entering the while stopped.
This drain measures 2" X 2" with a 1-1/2" center drain hole. Bolt Holes are 1.340" center to center.