Brand Name: AAF Flanders | Depth: 1 in. | Electrostatic: No | Filter Class: Class II | Filter Frame Material: Cardboard | Filter Material: Fiberglass | Filters Bacteria: Yes | Filters Pollen: Yes | Filters Smoke: Yes | Filters Viruses: No | Height: 10 in. | High Efficiency: Yes | Metal Mesh Support: No | Number in Package: 1 pk | Pleated: No | Trimmable: Yes | Width: 10 in. | Filters Dust/Lint: Yes | Filters Mold Spores: Yes | MERV Rating: 4 MERV The EZ Flow II filter frame is made from heavy chipboard in a one-piece design that eliminates corner separation. The filtering media is continuous filament spun glass. The synthetic media of the EZ Flow II PSF filter is continuous filament polyester. A resinous bonding agent provides rigidity and resistance to media compression. The EZ Flow II filter is made to function without a retainer by adhering the frame directly to the media, which has a light skin to make it self-retaining. Sealing is accomplished with a resilient hot-melt adhesive running the full perimeter of the frame on both upstream and downstream sides. | One-piece chipboard frame prevents broken corners and exposed metal | Heat-sealed frame provides unusual strength and serviceability | A metal grid on the air leaving side ensures more open face area and longer service life | Spun glass media