Square connection for a shower hose. The FixFit Wall Connection Square with backflow preventer from hansgrohe connects the shower hose to an existing water outlet on the wall. It can be used both in the shower and at the bathtub. The square rosette perfectly complements fixtures and showers that feature a rectangular design. The high-quality chrome surface is easy to maintain and retains its deep shine for a long time, creating a lasting beautiful bathroom ambiance. Particularly safe: The FixFit Wall Connection Square reliably prevents water that has been drawn out from flowing back into the drinking water supply (backflow preventer). This is especially important at the bathtub, for example, when the hand shower is submerged in water. Easy installation: The FixFit Wall Connection Square with backflow preventer has a G ½ connection thread. The plastic connection angle is simply screwed onto an existing water outlet on the wall and sealed. An illustrated installation manual is included.