16x26x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack biological fertilizer Operating Temperature: -40°C to 35°C

Operating Temperature: -40°C to 35°C (suspended)

mammals and omnivores requiring high protein

pH adjustment with acid and caustic pumps

so people are not bothered

Using a ribbon works well

16x26x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack biological fertilizer Operating Temperature: -40°C to 35°CNordic 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