Part of our new Madelyn Carter line of products; Hand selected by Vent <br />Covers Unlimited for superior quality, design, and value. Made from Cast <br />Aluminium: Gives the strength and durability of steel but much lighter and <br />without the potential for rust. These registers come with a heavy duty <br />aluminum damper to control the air flow. Powder Coated, Flat Black for the <br />look and feel of Cast Iron Always Measure the Size of the duct opening