Beckson developed the first pry-out deck plate. These plates were designed with an extra heavy O-ring to assure a water tight fit. This model of plates has a non-skid raised dimple center. Pry-out plates should be installed in areas where internal pressure (oil-canning) is not present. Trim ring outside diameter measures 8-1/8"; hole cut is 6-1/2"; passage is 6-3/16".