10x36x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack Commercial Lighting The average level of CO2

The average level of CO2 in the atmosphere is about 300 ppmv (parts per million)

- One side white

the optimum enrichment level of CO2 for plant growth has been established at 1500 ppmv

along with elastic wrists and ankles

For use with hydroponics and soil

10x36x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack Commercial Lighting The average level of CO2Nordic Pure Custom MERV 14 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