Pamlico air 16x20x4 merv 8 pleated ac furnace air filters. case of 6. actual size: 15-1/2 x 19-1/2 x 3-3/4

Nominal size: 16x20x4 | exact dimensions: 15.5" x 19.5" x 3.75" | does not replace 5" or 4-3/8" depth filters. 16x20x4 filter performance rating: merv 8, mpr 600, fpr 5. captures 90% of airborne particles without inhibiting air flow. traps particles such as dust, mold spores, pollen, lint, pet dander, debris, hair. enhanced air filtration: our air filters are made using an advanced pleated technology that offers more air coverage, improved particle capture performance and helps extends the life of your furnace, air conditioner, or hvac system. high quality contruction: constructed from a two-piece frame provides rigidity and durability. electrostatically charged pleats captures more harmful particles and prolongs the products lifespan by up to 3 times over fiberglass filters. industrial-grade dual side beverage board frames outperforms standard one-sided cardboard designs. manufactured in the usa. suggested to replace at least every 3 months for optimal performance.