GROCO Backing Block f/2" 2-1/2" Seacocks [BB-3] Cartography | Humminbird Taking its power from the

Taking its power from the SeaTalk network

The nylon bag features a sewn-in rigid ring that fits neatly into the deck plate to secure and support extra weight in the bag

With one reassuring click your tablet is both secured and released

Commercial Grade

GROCO Backing Block f/2" 2-1/2" Seacocks [BB-3] Cartography | Humminbird Taking its power from theBacking Block for 2" & 2 1 2" Seacocks Features: Each size fits multiple seacock sizes Press threaded brass inserts into the hull side of the backing block into the holes that match the seacock flange Rigid 1 2" thickness provides secure installation but is flexible enough to conform to minor hull curvature Will not swell or absorb moisture Made from an environmentally friendly PVC foam specially formulated for marine applications Specifications: