The Pamlico select FDC air filter is a cost-effective and 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.; ; Brand Name: Pamlico Air Width: 20 in. Height: 30 in. Depth: 1 in. Filter Material: Fiberglass MERV Rating: 4 MERV Pleated: No Product Type: Air Filter Number in Package: 1 pk Actual Size: 19-3/4 x 29-3/4 x 3/4 in. Electrostatic: No Filters Smoke: No Trimmable: Yes Filters Bacteria: No Filters Viruses: No Filter Frame Material: Beverage Board Filters Pollen: No Filter Class: Class I High Efficiency: No Metal Mesh Support: No Air Filter Size: 20x30x1 Filters Dust/Lint: Yes Filters Mold Spores: No