20x21x1 Exact MERV 14 AC Furnace Filters 12 Pack Aeromixer Synthetic Pro Edition General Application: Use 3-7 ml

General Application: Use 3-7 ml per gallon of water or nutrient solution

the device can be easily moved to any room—living room

Heavy duty grade shoe covers

extremely good for plants at all stages from veg to bloom

features a convenient transport/hanging handle

20x21x1 Exact MERV 14 AC Furnace Filters 12 Pack Aeromixer Synthetic Pro Edition General Application: Use 3-7 mlNordic 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.