14x16x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack organic 9%/ °C Power Supply 1

9%/ °C Power Supply 1

and greenhouses

outside in fields or in greenhouses

The active ingredient in Thymox Control Organic (thyme oil) has no known resistance

floors and other hard (inanimate) non-porous surfaces such as benches

14x16x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack organic 9%/ °C Power Supply 1Nordic 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