SKYSONIC (4 Pack) Pleated Furnace Air Filters 16 3/8 x 21 1/2 x 1 - MPR 1900 FPR 10 MERV 13 (Actual Dimensions: 16 3/8"x21 1/2"/4")

Four-pack of SKYSONIC pleated furnace air filters sized nominally 16 3/8" x 21 1/2" x 1" (Actual Size: 16 3/8" x 21 1/2" x 1/4"). High-efficiency filtration rated MPR 1900, FPR 10 and MERV 13 for improved indoor air quality. Compatible with air conditioners, furnaces, HVAC systems, air scrubbers, dehumidifiers and household vents. For best performance, replace filters every 60 to 90 days; increase replacement frequency to every 30 days during allergy season and winter. If you experience any problem with the product you received, please contact us at any time and we will handle it for you.