Use the Double -Up series to instantly create a double rod with any existing flat bracket rod set already mounted on your wall! Easy, no tool installation, and goes up in seconds. Double-Up is an instant expresso double rod designed to attach to your existing flat bracket drapery rod. The patent pending custom end-mount support finial is specifically designed create a continuous back rod by lining up Double-Up between multiple brackets (One (1) Double-Up rod required for 28-in to 48-in rods; Two (2) Double-Up rods required for 48-in to 86-in and 66-in to 144-in rods). Installation Instructions: ① Extend rod between existing support brackets; ② Use the hex screw (Allen key included) to secure the rod to the existing bracket.