11 1/4x23 1/4x1 Exact MERV 13 AC Furnace Filters 6 Pack cloning-&-seed-starting Standard logic CO2 controllers may

Standard logic CO2 controllers may be fine when using a CO2 generator which costs very little to operate

• High Power Factor

Once this filter begins to show some wear

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11 1/4x23 1/4x1 Exact MERV 13 AC Furnace Filters 6 Pack cloning-&-seed-starting Standard logic CO2 controllers mayNordic 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