15x30x1 MERV 13 AC Furnace Filters 6 Pack tubing the Humboldt Nutrients team of

the Humboldt Nutrients team of agronomists and chemists have created the first naturally chelated one-part formula on the market

it is a powerful repellent and anti-feedant and it serves as an Insect Growth Regulator (IGR)

The fixture is dimmable to 50% without any loss of efficiency using the Gavita E-Series LED Adapter and Gavita Master Controllers

• Completely non-toxic—will not react under light and heat

preferred choice of growing medium

15x30x1 MERV 13 AC Furnace Filters 6 Pack tubing the Humboldt Nutrients team ofNordic 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