6x12x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack bio-organic fertilizer "I switched from a 2-part

"I switched from a 2-part nutrient line and the difference in fruit set was noticeable within the first cycle

• pH stable

enhanced crop quality and increased yields

fruit and flowers - anything above ground

6x12x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack bio-organic fertilizer "I switched from a 2-partNordic 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