24 1/2x27x1 Trane ReplacementMERV 13 AC Furnace Filters 6 Pack new_additions After three weeks: 5 ml

After three weeks: 5 ml per liter of nutrient solution

Guaranteed Analysis: 0

• Phat Glass pack won't disintegrate like foam products

Select two containers of equal volume based on the size batch being used

24 1/2x27x1 Trane ReplacementMERV 13 AC Furnace Filters 6 Pack new_additions After three weeks: 5 mlNordic 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