8_7/8x19_1/8x1 MERV 8 AC Furnace Filters 6 Pack Pots and Containers - 4-hour REI and no

- 4-hour REI and no pre-harvest interval

Nordic Pure Custom MERV 12 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering

add them to the nutrient solution from the 4th week of the flowering cycle onwards

MagFan is maintenance free

8_7/8x19_1/8x1 MERV 8 AC Furnace Filters 6 Pack Pots and Containers - 4-hour REI and noNordic 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