15_1/4x15_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack spl_nextlight Developed through years of research

Developed through years of research

Customizable grow alarms

and herbs will receive adequate nutrition during the vegetative and flowering stages

Pests can’t build immunity to it

15_1/4x15_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack spl_nextlight Developed through years of researchNordic Pure Custom MERV 7 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