With a bit of creativity, it is possible to hang an IXXI on a sloping wall using the same hanging system. Normally, you only attach the IXXI at the top, but with a sloping wall, it's advisable to also attach the bottom. You can easily do this by attaching two wall clips with Powerstrips in the corners at the bottom. Depending on how steep the slope is, you can also choose to use wall clips and tesa Powerstrips at several points on the side instead of the usual I-connectors. Your IXXI always comes with enough wall clips for the top and the corner at the bottom.