This optional ceiling mount/joiner is designed to work with this Farrell Indoor/Outdoor Stainless Steel Tension Rod Ceiling Mount/Joiner Curtain Mounting Bracket. This product joiner allows you to join multiple Farrell Indoor/Outdoor Stainless Steel Tension Rods together to achieve any desired length. It works great for room dividers, outdoor porches, or any place where you require additional length to your curtain rod.