12x14x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Hydro Systems allowing your plants receive more

allowing your plants receive more energy and without burning your plants for maximum headroom

apply every 7–14 days or after significant rainfall

Once applied to a growing medium

Keep it Clean's main ingredient is Hydrogen Peroxide

5 meters of 1/4"

12x14x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Hydro Systems allowing your plants receive moreNordic 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