The CF8 rough finish stainless steel (equivalent to type 304) body and loose set non-tilt grate in our 9705 Medium Duty Top Floor Drain resists corrosive liquids found in chemical laboratories, dairies, breweries, and atomic energy and bottling plants while helping to maintain high sanitation standards. Its integral 12-3/4” (325) diam. integral flange is designed for welded installation on decks and provides a large surface area for bonding waterproof floor coverings onto.