Steel Design Bronze Series Registers, Air Returns, Hinged Air Returns, and Baseboard Registers Bringing Elegance within Reach... Available in Tuscan, Slotted, and Square—our most popular patterns—in most standard sizes and in our most popular four finishes: Black, Brown, Silver, and a Paint-able White. These decorative registers and grilles are easy to install and ready when you need them. All Bronze Series parts are constructed of 18-gauge steel with a Paint-Lock galvanized finish before powder coating for maximum corrosion resistance. All parts come with screw holes and color-matched mounting screws. Return air filter frames are provided with black washable filters. All supply air registers include an attached OBD damper (Air-Volume Control). Primarily used for wall and ceiling applications , with several sizes available for floor use. Screw holes are standard on all sizes except: 2.25 x 10, 2.25 x 12, 4 x 10, and 4 x 12. Note: These items are made just for you and are nonreturnable.