Active Air CO2 System with Timer, 1-20 cubic ft per hour

Description Growth-Boosting CO2 System: This easy-to-operate, user-friendly system delivers growth-enhancing CO2. Integrated with a programmable timer, it automatically maintains optimal CO2 levels for optimum growth. You can choose the COSYS for small to medium-sized places. For areas bigger than 10' x 10', opt for the COSYS20. CO2 Flow Rate Calculator: Put Hydrofarm's convenient flow rate calculator to use. Click HERE to access this tool.Specifications Length: 9.8 Inches Height: 7 Inches Width: 8.8 Inches Weight: 4.4 Lbs Unit: Each Warranty: 3 Years