Easily inspect your sump pump with this sump cover that has an installed screw off inspection port. Port is installed about 2" from the edge of the cover. The cover can be cut to fit the size of the sump crock. Cover is 3/16" thick. Inspection port screws off for easy access and the transparent center plate permits observation without the necessity of removing the center. Includes 5 pipe seals for your radon mitigation system - (1) 2", (2) 1-1/2", (1) 1-1/4" and (1) 2" cord seal