25x28x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack environmental-controllers The built-in temperature sensor ensures

The built-in temperature sensor ensures every reading is adjusted for environmental changes

Tiger Bloom makes it happen

A pail of ONA gel attaches securely to the bottom of the Carbon-Air unit

Mormon Crickets

and aeroponic systems

25x28x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack environmental-controllers The built-in temperature sensor ensuresNordic 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