Description
No additional additives required
With only one personnel required
5°C /±1°F pH Calibration Automatic
Using a particular strain of Bacillus thuringiensis kurstaki
and patented lamp depreciation control
20x26x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Nutriants No additional additives requiredNordic 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