Genuine Beckson replacement gasket for compatible 6" pry-out inspection ports and deck plates. Designed to replace a worn, damaged, or missing gasket and help restore a secure, watertight seal. Fitment / Sizing Part Number: D6P-G Style: Pry-Out Nominal Size: 6" Approx. Clear Opening: 6-3/16" Required Hole Cutout: 6-1/2" Approx. Outside Flange Diameter: 8-1/8" How to Check Your Size Confirm that your existing Beckson deck plate is a pry-out style, not a screw-out style. Then measure the clear opening or cutout of the deck plate rather than relying only on the outside flange diameter. For the 6" pry-out version, the cutout is approximately 6-1/2" and the outside flange is approximately 8-1/8". If possible, also check the underside of the lid or frame for a Beckson model or size marking before ordering.Features & Specifications UPC: 0021083001319 Description: O-Ring Fits: 6" pry-out deck plates