But @Brommers point remains I think, how do you get that on the hose inside the frame?
Indeed. You could only use that, as amey points out, if you have detachable entry ports. In which case, threading the hoses through should be a doddle anyway. Loads of space to play with.
@Brommers started
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But @Brommers point remains I think, how do you get that on the hose inside the frame?