17x21x1 Exact MERV 14 AC Furnace Filters 6 Pack soil every successful grow operation requires

every successful grow operation requires professional humidity control

81”) allowing the user to easily read both the pH and temperature simultaneously

It is a unique combination of pure seaweed extract with readily sequestered iron in an easy-to-use liquid form

That’s why our team is constantly in the lab expertly engineering products that do the hard work of balancing the environment for you

Great for general purpose laboratory use

17x21x1 Exact MERV 14 AC Furnace Filters 6 Pack soil every successful grow operation requiresNordic 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.