I posted this under building, but I reckoned plumbers were more likely to know the answer: //www.diynot.com/forums/viewtopic.php?t=126983
I already asked Ideal Standard and Utopia about this but they refused to answer (covering their backs) and Utoopia refused to comment even when I referred to a layout in their brochure...
I already asked Ideal Standard and Utopia about this but they refused to answer (covering their backs) and Utoopia refused to comment even when I referred to a layout in their brochure...