16x21x1 MERV 8 AC Furnace Filters 12 Pack nutrients-and-supplements Follow our grow schedule for

Follow our grow schedule for the best results

Still small in size

not the whole reservoir

socket is designed for CFL bulbs only

16x21x1 MERV 8 AC Furnace Filters 12 Pack nutrients-and-supplements Follow our grow schedule forNordic 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