14x22x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack ventilation Every material used in its

Every material used in its production either meets or exceeds NOP standards

Each air filter box accepts standard MERV filter replacements that slide into the inner chamber’s filter slot

• Perfect for Koi ponds

beside raised beds

extreme heat and lack of moisture

14x22x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack ventilation Every material used in itsNordic Pure Custom MERV 13 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