Best Furnace Filter Sizes

Filtrete 16x25x1 Furnace Filter, MPR 300, MERV 5, Clean Living Basic Dust 3-Month Pleated 1-Inch Air Filters, 6 Filters

United Filter 16x25x5 MERV 11 Furnace Filter (5-Pack), Pleated HVAC AC Furnace Air Filter Compatible with Honeywell FC100A1029, Lennox X6670, Carrier, Bryant (Actual Size: 15.75 x 24.75 x 4.38)

Bryant Part # M1-1056 Size 15 3/8" x 25 1/2" x 5 1/4" MERV 11 Case of 3

Lennox Healthy Climate 16x25x5 X6670 MERV 11 Filter-Actual Size 15 3/4" x 24 3/4" x 4 3/8". Pack of 3.

GeneralAire # 4511 ReservePro 16x25x5 furnace filter, Actual Size:15 5/8" x 24 3/16" x 4 15/16" Case of 3 Filters

16x25x1 Furnace Filter | AirPurete AP- 3M16251 | Actual Size 15 1/2" x 24 1/2" x 3/4" | MERV 8 | Pack of 6 | Manufactured in Canada

16x25x4 (3 5/8") MERV 8 Pleated Furnace Filter. Actual/Exact Size 15 3/8 x 24 3/8 x 3 5/8". Case of 4 Made in Canada by Furnace Filters.Ca

16x25x4 (3-5/8) MERV 11 A/C and Furnace Air Filters (Case of 4) Actual Size: 15-1/2" x 24-1/2" x 3-5/8" - HVAC Filters with High Dust Holding Capacity - Made in Canada - United Filter

Five Seasons M1-1056 Replacement MERV 11 Premium Box Furnace Filter for Air Cleaner Purification Systems, 1400 CFM, 25.5 x 5.25 x 15.38" (3 Pack)

M1-1056 MERV 11 AMP M1-1056 Replacement Filter. Actual Size 15 3/8" x 25 1/2" x 5 1/4". Case of 3 by Furnace Filters.Ca