6x20x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack light This new addition to the

This new addition to the Oakton EcoTestr product line features updates to make measuring water quality easier and faster

Increase efficiency

Get more ballast for your buck with the SG ballast

top it with a 6'' FloraCap and you are ready to hand feed

6x20x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack light This new addition to theNordic Pure Custom MERV 7 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