28x28x1 MERV 8 AC Furnace Filters 6 Pack propagation trays Expanded 4-digit dual-line display shows

Expanded 4-digit dual-line display shows pH and temperature readings simultaneously

May be applied anytime during the growing season through harvest

night only

3 Year Limited Warranty

5 pints/kWh

28x28x1 MERV 8 AC Furnace Filters 6 Pack propagation trays Expanded 4-digit dual-line display showsNordic 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