Usage: This 2.0 bar twin impeller shower pump is designed to supply both hot and cold water to your shower for a powerful shower every single time. Compatibility: If you don't know if you need a positive or negative head pump, we suggest using a universal head pump which is fully automatic and doesn’t need a minimum gravity flow to work. Installation: Grundfos shower pumps are easy to install. Everything that you will need for installation is included for you. Material: The shower pump has a durable and robust brass construction to ensure your shower pump is running as smoothly as possible for years to come. Guarantee: This product comes with a fantastic 5 year guarantee so you can have complete peace of mind with your purchase., Weight: 1.8518830008 Pounds, Manufacturer: Grundfos