True Blue 20 in. W X 30 in. H X 1 in. D Fiberglass 4 MERV Air Filter 3 pk (Pack of 10)Breathe easier and remove airborne allergens from your home with this Cut to Fit Furnace Air Filter from True Blue. The air filter is designed to fit almost all furnaces and is reusable. The air filter comes in a roll and can be cut to the size that you need. Roll measures 20" X 30'" X 1". Pack of 10. UPC: $PrimaryItemId$ Manufacturer Part No: 0120301 Brand Name: True Blue Width: 20 in. Depth: 1 in. Filter Material: Fiberglass Height: 30 in. Pleated: