25x30x1 MERV 8 AC Furnace Filters 6 Pack growing-accessories General frequencies of use: Every

General frequencies of use: Every 12 weeks throughout the growing season

whether grown in soilless mixes or soil

High 92 CRI

snow-white particle of perlite is sterile with a neutral pH and contains many tiny

• Flange: Built in 4"

25x30x1 MERV 8 AC Furnace Filters 6 Pack growing-accessories General frequencies of use: EveryNordic 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