The Box Fan Filter for 20 in. box fans is custom-sized to fit almost all 20 square box fans. It is made of a special blend of polyester synthetic media that is designed to be washable and air dried making it good for multiple uses. The filter protects you from large particles sticking to your fan and the further spread of airborne contaminants.

• Brand Name: AC-Safe
• Width: 20 in.
• Height: 20 in.
• Depth: 1/4 in.
• Filter Material: Polyester
• MERV Rating: 6 MERV
• Pleated: No
• Product Type: Box Fan Filter
• Number in Package: 1 pk
• Actual Size: 20 x 20 x 1/4 in.
• Electrostatic: No
• Filters Smoke: Yes
• Trimmable: Yes
• Filters Bacteria: Yes
• Filters Viruses: No
• Filters Pollen: Yes
• Filter Class: Class II
• Metal Mesh Support: No
• Air Filter Size: 20x20x1/4
• Filters Dust/Lint: Yes
• Filters Mold Spores: No