Carbon Dioxide (CO2) is one of the easiest ways to accelerate plant growth. Plants grown with supplemental CO2 can produce up to 40% more flowers or fruit. A CO2 generator is the most cost effective way to add CO2 to your environment. Many greenhouses use CO2 generators to boost CO2 levels safely and economically. C.A.P. has developed some of the safest and most reliable CO2 Generators. The GEN-1 is recommended for small to medium size areas up to 15' x 15'. The GEN-1 features a "two-stage" safety pilot valve, which will not allow fuel to flow to the burner unless the pilot is lit and it comes with a standard "tip-over" switch will shut down the fuel to the main burner in the event the unit falls or tips over. This C.A.P. CO2 generator is constructed of powder coated steel enclosures that resist moisture, rust and discoloration. It will provide years of trouble-free operation. The GEN-1 is manufactured in the USA using only AGA and/or UL listed components that are appropriate for use with propane. The units come complete with a new Type1 style "no-tool-required" propane regulator that makes tank replacement easy. C.A.P. CO2 generators operate up to 100 degrees cooler than other competitive products. The GEN-1 can also be easily converted from propane to natural gas or vise-versa in less than 10 minutes with an inexpensive kit available from Sunlight Supply. The GEN-1 CO2 generator is expandable! This allows you to increase the unit`s capacity to produce CO2 simply by installing additional burners. Each burner increases the CO2 generating capacity by approximately 3 cubic feet per hour. The GEN-1 is capable of producing between 3 and 13 cubic feet of CO2 per hour. It comes standard with one burner, producing approximately 3 cubic feet per hour. You can add up to 3 additional burners, increasing the unit is capacity to up approximately 13 cubic feet of CO2 per hour. This unit measures 11" x 16 ?" x 8 ?". This item has a 3 year manufacturer's warranty against defects.