6x12x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Chemicals General-use masks

General-use masks

FDA Listed Medical Device

There is a 0-hour REI when applied in a non-spraying method (pre-plant dip

non-specific fungicide and bactericide

6x12x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Chemicals General-use masksNordic 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