Looking at these slimline concealed Cisterns and wondering whether we need the metal frame. Have seen these;  http://www.sanctuary-bathrooms.co.uk/concealed-cisterns/geberit-concealed-dual-flush-cistern-up720-109.772.00.1.html I assume we could use these in our partition walls.  The frame adds extra width which we would rather avoid. Just been pointed out to me by hwmbo that if I want wall hung toilets then I need the frame! Yes, I want wall hung toilets