Four-hole bath combination 3/4" baseframe for installation under tiled surround without finishing trim set with thermostat and Aquadimmer concealed installation box with support legs and mounting plate consisting of: thermostat Aquadimmer and low part of the spout (pre-assembled on the mounting plate) wax thermoelement with non-rising spindle connection hoses shower connection built-in non return valve and dirt strainers drainage box with integrated outlet for splash water protected against backflow GROHE EcoJoy® technology for less water and perfect flow this part should be easy to access