Colombo CO₂ Profi SetThe CO profi set contains all the components needed to setup a professional CO system. With the 800 gram disposable cylinder, you will have enough CO gas to last for weeks. The system can be extended with a solenoid sold as an accessory, to stop the supply of CO during the night. So start using CO and give your plants what they need in order to flourish and grow as you have always imagined. Approx height to pin at top of bottle 28cm and width 10cm.