Specification - C1100-XS - Floor Cleanout with Heavy Duty Square Adjustable Cover and Plug MIFAB C1100-XS Series adjustable floor cleanout with laquered cast iron body and anchor flange, secondary "O" ring Test Seal, 4in diameter cleanout opening and heavy duty square scoriated combined cover and plug top assembly (specify material type) with stainless steel vandal proof allan key screws and primary gasket seal. (For membrane floors, add Suffix -C for the membrane clamp).