VEVOR Return Air Filter Grille, Fits W30 x H20in Duct Opening Size, Filter 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 W30 x H20in Duct Opening Size, Filter 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: 29.7 x 19.9 in / 75.5 x 50.5 cm,Installation Opening Thickness: 1.06 in / 2.7 cm,Filter Slot Dimensions: 29.6 x 19.8 x 1.3 in / 75.3 x 50.3 x 3.2 cm,Item Model Number: 1RAF3020F-1,Product Dimensions: 32.7 x 22.5 x 1.6 in / 83 x 57.2 x 4 cm,Net Weight: 8.93 lbs / 4.05 kg,Filter Rating: MERV8