23_1/4x29_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack aaron CO2 (optional)

CO2 (optional)

black tubing

Bike Trails

Positive pressure drain allows proper drainage without the need for a drain trap

MADE IN USA

23_1/4x29_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack aaron CO2 (optional)Nordic 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