9x27x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack misc 5% Driver Efficiency

5% Driver Efficiency

nor does it include bio-stimulants

It's a balanced formulation that allows for proper drainage

Perlite ore is a naturally occurring volcanic glass containing a small percentage of water

Overall width - Side to side: -10"

9x27x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack misc 5% Driver EfficiencyNordic 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