Specification - C1100 - Floor Cleanout with Adjustable Cover and Plug MIFAB C1100 Series (specify top assembly design) adjustable floor cleanout with laquered cast iron body and anchor flange, secondary "O" ring Test Seal, 4in diameter cleanout opening and 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).