Polylok 20 Heavy Duty Flat Cover/Lid

Designed to fit Polylok 20″ risers and d-boxes, will not work with other manufacturer’s risers, d-boxes, or corrugated pipe. Skid resistance surface Factory installed watertight and airtight gaskets Available in green Stainless steel screws provided These plastic covers are designed to fit the Polylok 20” D-Box or any of the Polylok 20” diameter risers. If you need to replace the cover on your D-Box or riser, there is no need to dig up your D-Box or remove the riser. Remove the existing cover, screw down the new one and you’re all set. Fade resistant, available in green.