TruAire 24x24 Filter Grille; Insulated Box, Filter grille will hold a 1" or 2" filter4020FG-2DB $516.00 SKU: 4020FG-2DB Back $516.00 Quantity -+ Add to Cart Details TruAire 24x24 Filter Grille; Insulated Box, Filter grille will hold a 1" or 2" filter DetailsBackDetailsTruAire 24x24 Filter Grille; Insulated Box, Filter grille will hold a 1" or 2" filterSee MoreSee Less