12_3/4x21x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack commercial-lighting-fixture Connect to existing ventilation system

Connect to existing ventilation system to distribute throughout room or air exhaust system

Press and hold the button for a few seconds and Primo automatically enters calibration mode

B-Lite Master Controller is compact

Voltage: AC 120V 50/60Hz

12_3/4x21x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack commercial-lighting-fixture Connect to existing ventilation systemNordic Pure Custom MERV 12 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