Best High Efficiency Furnace Filter

Filtrete 16x25x1 AC Furnace Air Filter, MERV 5, MPR 300, Capture Unwanted Particles, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6-Pack (Actual Size15.69x24.69x0.81 in)

Aerostar 16x25x4 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 15 1/2"x24 1/2"x3 3/4")

Aerostar 16x25x4 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 15 1/2"x24 1/2"x3 3/4")

AprilAire 210 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 11, Clean Air & Dust, 20x25x4 Air Filter (Pack of 1)

Aerostar 16x25x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 15 3/4" x 24 3/4" x 3/4")

Filtrete 16x25x5 AC Furnace Air Filter, MPR 1000, MERV 11, Fits Lennox Devices, Allergen Defense, Electrostatic Air Cleaning Filter, 2-Pack (actual size 15.63 x 24.74 x 4.31)

Simply Filters 20x25x1 MERV 13, MPR 1500 Air Filter (6 Pack) Actual Size: 19.75"x24.75"x0.75" HVAC, AC, Furnace, Replacement, Return Air Filter for Home & Office

Filtrete 16x25x4 AC Furnace Air Filter, MPR 1550, MERV 12, Fits Lennox & Honeywell, Allergen, Bacteria & Virus, , Electrostatic Air Cleaning Filter, 2-Pack (actual size 15.88 x 24.56 x 4.31)

Filterbuy 20x25x4 Air Filter MERV 8 Dust Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 19.50 x 24.50 x 3.63 Inches)

Filterbuy 20x25x5 Air Filter MERV 11 Allergen Defense (2-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier, and More (Actual Size: 19.88 x 24.75 x 4.38 Inches)