2 pack of 3 WAY Curved Blade Supply Diffuser for 10x10 Duct Opening, White, Steel\n\n1/2 inch spaced curved fins.\nPrimary use: Side wall and ceiling.\nScrews are included with the system, standard.\nAll-steel construction.\nDurable white powder coated.\nStandard color is white (Ral9016).\n\HOW TO MEASURE A Grille\nAlways measure the size of the duct opening (the 'hole' in the duct/wall). Do not measure the entire size of the register itself. Size of the grille is; listed size +1.75-inch.\n\nUnderstanding Width & Height\nIn a grille size, the first number always represents the width and the second one is the height. As an Example: If the hole on your wall/duct is 10 inches wide by 10 inches tall, order 10x10 option.\n\nFor this particular product you're viewing at the moment, the hole on your wall/duct opening should be 10x10 duct opening.\n\nClick the 'Add To Cart' button now to order your Air Supply Grille!