21x23_1/2x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack Emitters and blue light while maintaining

and blue light while maintaining high CRI

Provides 22 cubic feet per hr of CO2

Nordic Pure 20x25x4 Plus Carbon Air Filters MERV 7 are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that will attract and capture most airborne particulates in your home

* Adjustable Voltage

Containing dual-ball bearings rated at 67

21x23_1/2x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack Emitters and blue light while maintainingNordic Pure Custom MERV 7 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