6x20x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack -power-&-lamp-cords Tolerates high daytime temperatures and

Tolerates high daytime temperatures and low nighttime temperatures

Blended with multi-strain endomycorrhizal blend

50x higher than Mammoth P

Gypsy Moth

perfect for 3x5' veg footprint

6x20x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack -power-&-lamp-cords Tolerates high daytime temperatures andNordic Pure Custom MERV 8 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. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition