25x29x1 MERV 13 AC Furnace Filters 6 Pack Synthetic Pro Edition Apply weekly and on the

Apply weekly and on the same day and time each week

Its heavy duty pre-galvanized steel construction is lined with high purity European aluminum for years of dependable growing performance

Big Time Roots is non-toxic and safe for all plant

Worm castings add beneficial microbial life to your soil

available exclusively from Hydrofarm

25x29x1 MERV 13 AC Furnace Filters 6 Pack Synthetic Pro Edition Apply weekly and on theNordic 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