25x30x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack drying-racks Maintenance free

Maintenance free

It also includes added potassium (K)

Working Environments:                Temperature 32-122°F

The Amazing Doctor Zymes’ Eliminator is an OMRI listed

Set timer for day time only

25x30x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack drying-racks Maintenance freeNordic 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