12x14x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack spl_fltrbuy Beny-Gro reduces the need for

Beny-Gro reduces the need for chemical fertilizers

Being proactive

Because some states recognize only the acid-insoluble method

They feature a shaft for each of the two flaps

Trade in your old tent for a Gorilla growing experience

12x14x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack spl_fltrbuy Beny-Gro reduces the need forNordic 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