The Kärcher WV5 7 WV6 holder at https://www.printables.com/model/109045-wandhalterung-fur-karcher-wv5-fensterreiniger is just for the cleaner itself. But the Plus / Premium version come with an additional spray bottle and a second suction blade, so I designed this holder.
I did print it in PLA, 0.3mm layer height (I have a 0.6mm nozzle). PETG should also work. No supports needed.
The author hasn't provided the model origin yet.