12x25x1 Pleated MERV 14 Air Filters 6 Pack Master Controller 3 microns— similar to the

3 microns— similar to the protection of an N95 respirator

This kit provides a good start for new or experienced gardeners that can be expanded with the addition of other great Humboldt Nutrients products

Fire Blight

or lighting adapters

12x25x1 Pleated MERV 14 Air Filters 6 Pack Master Controller 3 microns— similar to theNordic Pure MERV 14 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 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.