16x20x4 MERV 8 AC Furnace 4" Inch Air Filters. 6 PACK. (Actual Size: 15-1/2 x 19-1/2 x 3-3/4)

Effectively captures and blocks small particles such as dust, smog, lint, pet dander, dust mites, pollen and other small air particles. Filter Rating: MERV 8 FPR 5-6 MPR 600. Achieves MERV 8 pressure drop and air flow. Manufactured in the USA MERV 8 Description Protects from Lint, Dust, Pet Dander, Pollen, Dust Mites, & Mold Available in 1", 2", 4" depths, and several standard face sizes Independently tested and verified for quality control 100% synthetic, proprietary media resists moisture and damage Extremely low-pressure drop and high dust holding capacity Heavy-duty, moisture resistant beverage board frame Two-piece frame provides rigidity with double-wall thickness around outer edge 4" models use die-cut finger separators to stabilize each pleat Rust-resistant, expanded metal support grid made of galvanized steel 100% water repellent, high-strength adhesive coats the entire interior of frame Pleat consistency maximizes performance Engineered and designed for high strength and rigidity Recommended to replace at least every 90 days Made in the USA.