20x28x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack microbial fertilizer These models are installed using

These models are installed using a standard 3/4” MNPT compression fitting

Comes in a package designed to keep air and light from damaging the solution

3100K (598 µmol/s) or 4200K (562 µmol/s)

Low Battery Indicator

20x28x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack microbial fertilizer These models are installed usingNordic 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