17x28x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Sungrower Trellis Netting 1000’ and Shorter and other solids commonly found

and other solids commonly found in a plant's juice

High humidity can also prevent plants from properly taking in CO2

Reclosable bag for easy storage

the rate of reaction can be over 15 million times faster than if left uncatalyzed

and Gas Regulator

17x28x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Sungrower Trellis Netting 1000’ and Shorter and other solids commonly foundNordic 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