Check the listing for details. Naiture Steel Floor Register Victorian Style In 9 Sizes and 7 Finishes. Condition: New. Listed at 39.99 USD. Duct size 2-1/4" X 10" 2-1/4" X 12" 2-1/4" X 14" 4" X 10" Overall Size 3-1/2" X 11-1/4" 3-1/2" X 13-1/4" 3-1/2" X 15-1/4" 5-1/4" X 11" Duct size 4" X 12" 4" X 14" 6" X 10" 6"X12" 6" X 14" Overall Size 5-1/4" X 13" 5-1/4" X 15" 7-1/4" X 11" 7-1/4"X13" 7-1/4" X 15" Material: Steel Installation Type: Floor Made of 2mm steel.Removable louvers.To determine size needed, measure air duct opening rather than old register or grille.NOTE: We can ship to AK, HI and US Protectorates by expedited shipping, please send us your shipping address, product name and Qty, we will send you a shipping quotation based on your location. US Protectorates include Puerto Rico, Guam, Virgin Islands, American Samoa, Northern Mariana Islands, Palau, Federated States of Micronesia and Marshall Islands.