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)

These are thought to protect the beneficial larvae from leaf drying

For use with hydroponics and soil

Mason Bees are often referred to as solitary bees because they do not have a social order like honey bees and bumble bees

Features a multi-speed controller with power switch

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