18x28x1 Exact MERV 8 AC Furnace Filters 6 Pack ventilation and ducting Can be used in all

Can be used in all growing stages

Each power outlet receptacle is rated 240V

dense canopy development and massive root systems

Reapply approximately one month after the initial application

18x28x1 Exact MERV 8 AC Furnace Filters 6 Pack ventilation and ducting Can be used in allNordic Pure MERV 8 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 and other contaminants are removed. MERV 8 furnace filters are comparable to HVAC filters with the rating of MPR 800. While different companies use different scales to measure the air filters