18x27x1 MERV 13 AC Furnace Filters 6 Pack Fertilizer Outdoor and Raised Bed Gardens

Outdoor and Raised Bed Gardens – Ideal for large-scale outdoor grows where soil biology plays a critical role in plant performance and resilience

we’re making inactive ingredients a thing of the past

especially during high-humidity conditions

Flood & Drain / Ebb & Flow Systems – A top choice for flood-and-drain setups where free drainage and oxygen retention are critical between flood cycles

The Air-Pot is made of recycled HDPE plastic

18x27x1 MERV 13 AC Furnace Filters 6 Pack Fertilizer Outdoor and Raised Bed GardensNordic 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