carbon furnace air filter

Glasfloss 20x25x4 MERV 10 Pleated 4 inches AC Furnace Air Filters. Quantity 2. Actual Size: 19-1/2 x 24-1/2 x 3-3/4

Nordic Pure 20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 8 Furnace Air Filters 2 Pack

EconoHome 16x25x4 MERV 11 Pleated AC Furnace Air Filters, Allergen Defense, 2-Pack, Fits Lennox X6670 & Honeywell FC100A1029, 2-Pack

Mann+Hummel 16x25x4 MERV 8 Pleated HVAC AC Furnace Air Filters. Box of 4. (Exact Size: 15.5 x 24.5 x 3.75 Inches)

Simply 15x15x1 Air Filter, Merv 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 14.75"x14.75"x0.75") DUST, Pet, & Allergy Control

Simply 12x14x1 Air Filter, Merv 8, MPR 600, 4 Pack, Furnace Air Filter for HVAC (Actual Size: 11.75"x13.75"x0.75") DUST, Pet, & Allergy Control

Nordic Pure 20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Furnace Air Filters 2 Pack

Nordic Pure 20x25x4 (3 5/8) Pleated MERV 12 Furnace Air Filters 2 Pack

Simply Air Filter, MERV 08, MERV 11, MERV 13, 2 Pack, Furnace Air Filter for HVAC

Nordic Pure 16x25x1 (15_1/2x24_1/2) Pleated MERV 7 Furnace Air Filters 6 Pack

Mann+Hummel 20x20x4 MERV 8 Pleated HVAC AC Furnace Air Filters. 2 Pack. (Exact Size: 19.5 x 19.5 x 3.75 Inches)

Nordic Pure 20x25x1 (19_1/2x24_1/2) Pleated MERV 12 Furnace Air Filters 4 Pack

Aerostar 14x20x1 MERV 6 Pleated Air Filter, AC Furnace Air Filter, 6PK (Actual Size: 13 3/4"x 19 3/4" x 3/4")

Nordic Pure 16x25x1 (15_1/2x24_1/2) Pleated MERV 8 Furnace Air Filters 3 Pack

Nordic Pure 20x25x1 (19_1/2x24_1/2) Pleated MERV 12 Furnace Air Filters 3 Pack

Nordic Pure 20x20x1 (19_1/2x19_1/2) Pleated MERV 8 Furnace Air Filters 2 Pack

Simply 15.75x15.75x1 Air Filter, Merv 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 15.75"x15.75"x0.75") DUST, Pet, & Allergy Control