9x13x1 MERV 13 AC Furnace Filters 6 Pack hydro-systems 2 mm minimum wall thickness

2 mm minimum wall thickness

premium compressed coir granules are formulated for growers

With 24000 psi of pressure this unit works great in both commercial and home applications

Dunks float in water and can be anchored with string to prevent them from being washed away

9x13x1 MERV 13 AC Furnace Filters 6 Pack hydro-systems 2 mm minimum wall thicknessNordic 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