21_1/4x21_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack bio soil apply before disease symptoms appear

apply before disease symptoms appear

recycle timers

min/max recall

And keep growing with the ultimate handy team

Dimmable to 50% when using the Gavita Master Controller and E-Series Adapter

21_1/4x21_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack bio soil apply before disease symptoms appearNordic 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