18x28x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Sprayers and Wands Can be used as a

Can be used as a whole-house filter or standalone

Power Generation

AMP-2 Sensor Board:                                   Max

And unlike our competitors

Double RJ12 Cable Sockets for Daisy Chain Connectivity

18x28x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Sprayers and Wands Can be used as aNordic Pure Custom MERV 13 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