17_1/2x27x1 Trane Replacement MERV 7 Plus Carbon AC Furnace Filters 6 Pack air-purification (2) 8 port Controllers

(2) 8 port Controllers

The patented formula works faster than the other leading herbicides

2 micron filter for air flow

and as a hydroponic medium

void if not installed by HVAC professional

17_1/2x27x1 Trane Replacement MERV 7 Plus Carbon AC Furnace Filters 6 Pack air-purification (2) 8 port ControllersNordic Pure Trane Replacement 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