21x21x1 MERV 13 AC Furnace Filters 6 Pack hydro-components provides a growing environment which

provides a growing environment which benefits growers looking for significant drainage capacity

Actual lifespan will vary depending on your water quality and usage volume

This allows it to inhibit fungal and bacterial skin conditions common in animals such as Rain Rot and Ring Worm

and is well-suited for hydroponic reservoirs

making it safe for animals

21x21x1 MERV 13 AC Furnace Filters 6 Pack hydro-components provides a growing environment whichNordic 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