17x26x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack cube • Stronger corners and thicker

• Stronger corners and thicker walls than any others in their class

13 oz of Soil Activator per gallon of total nutrient solution

The GMC's enclosure features four separate power outlets used to connect external devices such as fans

grow tent set ups and commercial grower facilities

17x26x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack cube • Stronger corners and thickerNordic Pure Custom MERV 8 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