SKYSONIC (6 Pack) 16 3/8 x 21 1/2 x 1 Furnace Air Filters, MPR 1900 FPR 10, MERV 13 Pleated Air Filter (Actual Dimensions: 16 3/8" 21 1/2" 1"; Actual Size: 16 3/8" 21 1/2" 1/4")

Pack of six pleated SKYSONIC furnace filters designed to fit openings measuring 16 3/8" x 21 1/2" x 1" (actual manufactured size: 16 3/8" x 21 1/2" x 1/4"). Filtration ratings: MPR 1900, FPR 10 and MERV 13 for effective particle capture. Suitable for use in air conditioners, furnaces, HVAC systems, air scrubbers, dehumidifiers and household vents to help maintain a healthier indoor environment. Replace every 60 to 90 days under normal conditions; increase replacement frequency to every 30 days during allergy season and winter. If you encounter any problem with the product you received, please contact us at any time and we will take care of it for you.