The blue-painted, steel box-section, adjustable frame for fixing wall- hung pans, with integral cistern, flush pipe, waste bracket and front (or top) flush plate... Great product, once you've deciphered the unintuitive hieroglyphical installation guide (German text would have been easier, even though I don't speak the language)... not to worry though, install one and you'll never need the manual again!
For those in the 'know' already, I'm curious to learn the purpose of the plastic tube/pipe that runs from the top-front-left-hand-corner of the cistern casing (and is made from the same material as the casing), down the left-hand-side of the frame, bends twice (at 45=B0) and then once (at 90=B0) to emerge through a hole, in the bottom left-hand corner of the blue-painted, steel-faceplate, of the frame. At this point, it appears to be capped with a hinged flap, again of the same material... like the lid on a box of tic-tacs!
The install manual shows this pipe, but doesn't indicate it in any way; the Geberit website is totally useless for product technical info and of the three 'plumber mates' I've asked about this question, none of them have even noticed this pipe before, let alone what its for!
My own personal best guess is that it is a conduit for feeding a tube, connected to an 'air-button' (mounted low or on the floor) through to the flush mechanism, in the cistern above!?
Can anyone shed any light?
cheers, deano.