SKYSONIC 6-Pack 19 7/8 x 21 1/2 x 1 in Furnace Air Filters — Pleated MERV 13 (MPR 1900, FPR 10) (Actual: 19 7/8 x 21 1/2 x 3/4 in)

High-efficiency pleated furnace filters from SKYSONIC with MPR 1900, FPR 10 and MERV 13 performance. Nominal dimensions: 19 7/8 x 21 1/2 x 1 in; actual dimensions: 19 7/8 x 21 1/2 x 3/4 in. Sold as a 6-pack, these filters work with air conditioners, furnaces, HVAC systems, air scrubbers, dehumidifiers and house vents. A cost-effective way to improve indoor air quality, they should be replaced every 60–90 days under normal conditions and every 30 days during allergy season or winter for best results. If you encounter any issue with the product you received, contact us anytime and we will take care of it.