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19-7/8 x 21-1/2 x 1 MERV 11 Pleated AC Furnace Air Filters by Mann+Hummel. Case of 12

19-7/8 x 21-1/2 x 1 MERV 8 ( FPR 5-6 ) AC and Furnace Pleated Air Filters by Mann+Hummel. Case of 12

19-7/8 x 21-1/2 x 1 MERV 8 ( FPR 5-6 ) AC and Furnace Pleated Air Filters by Mann+Hummel. Quantity 3

19-7/8 x 21-1/2 x 1 MERV 8 Pleated HVAC AC Furnace Air Filters by Mann+Hummel. 6 Pack. (Exact Size: 19.88 x 21.5 x 0.75 Inches)

20x20x1 MERV 11 Pleated AC Furnace Air Filters by Mann+Hummel. 2 Pack

20x20x1 MERV 11 Pleated AC Furnace Air Filters by Mann+Hummel. 3 Pack

20x20x1 MERV 11 Pleated AC Furnace Air Filters by Mann+Hummel. 4 Pack

20x20x1 MERV 11 Pleated AC Furnace Air Filters by Mann+Hummel. 6 Pack

20x20x1 MERV 11 Pleated AC Furnace Air Filters by Mann+Hummel. Case of 12

20x20x1 MERV 8 Pleated AC Furnace Air Filters by Mann+Hummel. 2 Pack

20x20x1 MERV 8 Pleated AC Furnace Air Filters by Mann+Hummel. 3 Pack

20x20x1 MERV 8 Pleated AC Furnace Air Filters by Mann+Hummel. 4 Pack

20x20x1 MERV 8 Pleated HVAC AC Furnace Air Filters by Mann+Hummel. 6 Pack. (Exact Size: 19.5 x 19.5 x 0.75 Inches)

20x20x1 MERV 8 Pleated HVAC AC Furnace Air Filters by Mann+Hummel. Case of 12. (Exact Size: 19.5 x 19.5 x 0.75 Inches)

20x20x2 MERV 11 Pleated AC Furnace Air Filters by Mann+Hummel. 2 Pack

20x20x2 MERV 11 Pleated AC Furnace Air Filters by Mann+Hummel. 3 Pack

20x20x2 MERV 11 Pleated AC Furnace Air Filters by Mann+Hummel. 4 Pack

20x20x2 MERV 11 Pleated AC Furnace Air Filters by Mann+Hummel. 6 Pack

20x20x2 MERV 11 Pleated AC Furnace Air Filters by Mann+Hummel. Case of 12

20x20x2 MERV 13 Pleated AC Furnace Air Filters by Mann+Hummel. 2 Pack