In reply to doug5_10: Powerbar is rated to 20 stone, however they can't rate a 'sturdy' door frame as they state in the wee instruction leaflet. Despite being a pishy modern aluminium studded wall, this doorway is near a 4-way intersection so should be relatively OK. Cantilever action is pretty clever, haven't heard any horror stories of collapsing doorways! I've read about padding the contact points elsewhere too, although I've still got plenty of polyfila left from filling the holes left from discovering my non-existent studs!