16x26x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack spl_magfan Worm castings contain growth hormones

Worm castings contain growth hormones that promote bigger and more fibrous plant roots

State-of-the-art electronics throughout

Please note that this product will increase the PPM (parts per million) of your nutrient solution

36 x PotPro™ | Platform

16x26x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack spl_magfan Worm castings contain growth hormonesNordic 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