23_1/2x23_1/2x1 MERV 14 AC Furnace Filters 6 Pack fluorescent-lighting Accuracy of +/- 0

Accuracy of +/- 0

This leads to an increase in the absorption of essential nutrients that help develop impressive aromatic flowers and fruits

Use 1 – 3 teaspoons (5 – 15 ml) per gallon

Many plants and microbes prefer mildly acidic soil

2" humidity dome

23_1/2x23_1/2x1 MERV 14 AC Furnace Filters 6 Pack fluorescent-lighting Accuracy of +/- 0Nordic Pure MERV 14 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 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.