12x27x1 MERV 13 AC Furnace Filters 6 Pack spl_bfg 10" and 12"

10" and 12"

The ES means Extra Strength

This mother culture concentrate is all-natural

Our root stimulator specifically targets the roots to create strong and white root systems

4 RAW Phosphorus - 2 oz

12x27x1 MERV 13 AC Furnace Filters 6 Pack spl_bfg 10" and 12"Nordic 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