17_1/4x23_1/4x1 Exact MERV 12 AC Furnace Filters 6 Pack shoe-cover it is ideal for testing

it is ideal for testing applications such as hydroponics & gardening

they can easily be poured out with minimal mess

We include a multiple strain mycorrhizal blend

Data logs direct to your computer via wireless connection with Bluelab Connect Stick

The blend supports better aeration and drainage

17_1/4x23_1/4x1 Exact MERV 12 AC Furnace Filters 6 Pack shoe-cover it is ideal for testingNordic Pure MERV 12 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, allergens and other contaminants are removed. MERV 12 furnace filters are comparable to HVAC filters with the rating of MPR 1500 1900. While different