25x28x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack environmental-controllers and more productive plants

and more productive plants

Mormon Crickets

and the environment

and aeroponic systems

Positive pressure drain allows proper drainage without the need for a drain trap

25x28x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack environmental-controllers and more productive plantsNordic Pure Custom MERV 8 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