16_1/2x21x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack pots-and-containers Pure Carbon HVAC filters help

Pure Carbon HVAC filters help control and neutralize strong odors from pets

This clears the pores of the roots allowing for vigorous nutrient uptake into the plant

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16_1/2x21x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack pots-and-containers Pure Carbon HVAC filters helpNordic 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. 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