12x22x1 Exact MERV 14 AC Furnace Filters 6 Pack Nutrients and Supplements VISIBILITY – The plastic in

VISIBILITY – The plastic in these domes is clear and allows you to easily observe the plants—ideal for cuttings as well as seedlings

and sharpies

In this way

pets or the environment

Automatic 1 or 2 point pH calibration

12x22x1 Exact MERV 14 AC Furnace Filters 6 Pack Nutrients and Supplements VISIBILITY – The plastic inNordic 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.