The Pamlico select FDC air filter is efficient heavy-duty and disposable fiberglass filter in a durable kraft board two-piece die-cut frame. Effectively captures household dust and other large contaminants. Has a MERV rating of 4. Lasts for up to 30 days and protects the HVAC system. Our select FDC air filter features durable construction including a heavy-duty frame with reinforced grids on one side. Features Fiberglass 4 MERV Air Filter Pack of 12Specifications Filter Material: Fiberglass Depth: 2 in. Electrostatic: No Filter Class: Class II Filter Frame Material: Beverage Board Filters Bacteria: No Filters Pollen: No Filters Smoke: No Filters Viruses: No High Efficiency: No Metal Mesh Support: No Pleated: No Trimmable: Yes Width: 20 in. Filters Dust/Lint: Yes Filters Mold Spores: No Height: 30 in. MERV Rating: 4 Actual Size: 19.5 H x 29.5 W x 1.75 D in. Air Filter Size: 20 H x 30 W x 2 D in. Country of Origin: United States Weight: 11.5 lbs - SKU: ACHR172696