12_1/8x15x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack DUCTWORK Precisely control photon output when

Precisely control photon output when paired with Autopilot PX series controller (PX2 and above)

With our photo filter

When making new traps

Duct Opening Diameter: 4 inches | Front Plate Size: 6

12_1/8x15x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack DUCTWORK Precisely control photon output whenNordic 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