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Warms root area 10-20°F over ambient temperature to improve germination
It is best to measure the exact size of your A/C filter and compare it to our Actual Size to be sure your HVAC replacement filter fits
Ideal for propagation and cloning applications
8" x 32" Standard Carbon Air Filter
Can be used multiple seasons
13x21x1 Exact MERV 12 AC Furnace Filters 6 Pack Monterey Lawn & Garden Products Warms root area 10-20°F overNordic Pure MERV 12 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, allergens and other contaminants are removed. MERV 12 furnace filters are comparable to HVAC filters with the rating of MPR 1500 1900. While different
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