Specification - C1100-RC - Floor Cleanout With Carpet Marker, Round Adjustable Cover and Plug MIFAB Series C1100-RC adjustable floor cleanout with lacquered cast iron body and anchor flange, secondary "O" ring Test Seal, 4in diameter cleanout opening and round nickel bronze scoriated combined cover and plug top assembly with stainless steel vandal proof allen key screws, and primary gasket seal and 1-1/2in round stainless steel carpet marker. (For membrane floors add Suffix -C for the membrane clamp).