VEVOR Return Air Filter Grille, Fits W24 x H18 Inch Duct Opening, Filter Not Included, Return Air Vent Cover for Wall, Powder-Coated Steel Return Air Grill Detachable Face/Door for 1 inch Filters

VEVOR Return Air Filter Grille, Fits W24 x H18 Inch Duct Opening, Filter Not Included, Return Air Vent Cover for Wall, Powder-Coated Steel Return Air Grill Detachable Face/Door for 1 inch FiltersReturn Air Filter GrilleHow to MeasureEfficient Air ExchangeEasy to Replace and MaintainEasy InstallationMultiple Size OptionsInstallation Opening Dimensions: 23.8 x 17.9 in / 60.5 x 45.5 cm,Installation Opening Thickness: 1.06 in / 2.7 cm,Filter Slot Dimensions: 23.7 x 17.8 x 1.3 in / 60.3 x 45.3 x 3.2 cm,Item Model Number: 1RAF2418-1,Product Dimensions: 26.6 x 20.7 x 1.6 in / 67.6 x 52.5 x 4 cm,Net Weight: 6.94 lbs / 3.15 kg