System 4 is a flush for free solution.  Fitted for mains top up and toilet feed, ready for a qualified trade person to install.  Mains top up control parts are: solenoid switches, Tun-dishes (backflow preventative, to comply with AA and AB air gap regulations).  Non return valves, level sensors/float switches, pressure switches and Gardena 3.3 bar pump. Collect and store up to 700litres of rain and 'grey' water with Rain Catcher System 4.  All water tank dimensions are the same and are - Length: 1500mm x Width: 500mm x Height: 1000mm. 

Additional tanks can be linked - the facility for this is much cheaper to add at the time of ordering your first tank, rather than later even if you aren't 100% sure of your future plans.

Before purchase, please consider the accessories at the bottom of the page, as some of these (if purchased) are fitted for you at the factory prior to delivery.