14x22x1 Exact MERV 13 AC Furnace Filters 12 Pack veg-and-bloom The effective life of your

The effective life of your air filter depends on both the inside and outside conditions of the environment in which the filter is being used

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3-Feet (40cm)

AO 36/40 plugs fit well into the hole sizes provided by the blocks

14x22x1 Exact MERV 13 AC Furnace Filters 12 Pack veg-and-bloom The effective life of yourNordic Pure MERV 13 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200