15x30x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack LUXX Bar For greenhouse growers the problem

For greenhouse growers the problem starts at day one

Keep pouches sealed until ready to use to preserve propagule viability

and responsive to speed control

Unfortunately

Ducting Port Quantity: 6 (11" Double Cinching)

15x30x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack LUXX Bar For greenhouse growers the problemNordic Pure pleated AC air filters are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home or office. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, baking flour, mold spores and other contaminants are removed. Our filter media prevents the growth of bacteria or mold, resulting in a much healthier living space.