16x22_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack pump the Max-Fan™PRO SERIES has a

the Max-Fan™PRO SERIES has a much more Robust housing due to the fiberglass Reinforced plastic compounds that meet all of the UL and CSA requirements

A great organic alternative to clay pellets or rocks

The corner pieces share the same rigidity that keeps the tent upright and sturdier than others

If you have ever accidentally ringed a young tree

16x22_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack pump the Max-Fan™PRO SERIES has aNordic Pure Custom MERV 14 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