Used with pre-manufactured or mortar shower pans with a linear drain. Designed for linear drain installations when the drain cannot be installed at the back wall or if a drain at the entry is desired. The entry cutout in plywood subfloor for the linear drain is recessed 11/16” to account for the drain depth. Suitable for linear drains up to 72” in length. Brackets are made of 16 gauge galvanized steel. Manufactured in Colorado, USA.