16_1/2x21x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Grow1 5' Steel Stake That means frequent turning

That means frequent turning

High efficiency along with high intensity and cutting-edge performance make the Phantom CMh System a smart choice

and can withstand high impact

No Dyes (Why do others add dyes

16_1/2x21x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Grow1 5' Steel Stake That means frequent turningNordic Pure Custom MERV 10 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