Used with pre-manufactured or mortar shower pans with point drain. Covers 25 square feet or less – recommended sizes of shower pans are 5′ x 5′ or 4′ x 6′. Floor height within the shower area is recessed 11/16″ inch and is limited by the height of the floor joists. Brackets are made of 16 gauge galvanized steel. Manufactured in Colorado, USA.