Blueprint Controllers CGLP-10 CO2 Generator LP 10-burnerFor accelerated plant growth in spaces large and small, the Blueprint Controllers CO2 Generator LP turns liquid propane into supplemental carbon dioxide with 10 preinstalled burners for a maximum output of 26. 5 cubic feet per hour of CO2 and 22,630 BTU. Selector switches operate two, six or all 10 burners at a time for enhanced three in one functionality not found on smaller units. The included brass burner plugs can further modify CO2 output to meet