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Compatible with all growing mediums and watering methods
Encarsia formosa remain effective outside of those temperature and humidity ranges
Features an internal manual damper which can be adjusted to open or close
As LED's pave the way of the gardening future be sure to leave your grow room in MINT condition
22x22x1 MERV 13 AC Furnace Filters 6 Pack rock-bottom Compatible with all growing mediumsNordic 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
