23x25x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack house and garden soil multiple sources of nitrogen and

multiple sources of nitrogen and fully chelated micronutrients

The AC Infinity axial fan is UL recognized under certificate E503903

and bio-teas

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23x25x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack house and garden soil multiple sources of nitrogen andNordic Pure Custom MERV 14 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