@Trunkie and @duncs - definitely housing? My oven comes with the 4 x metal brackets shown in the video above which doesn't have a housing unit. Two horizontal ones act as runners for it to sit on, then two vertical ones for it to screw into as well.
I'm hoping to be amazed that they will rather than have to get yet another unit! But equally mine looks almost identical to that and comes with those parts and that's an official video / the instructions seem to show the same thing etc.
@Trunkie and @duncs - definitely housing? My oven comes with the 4 x metal brackets shown in the video above which doesn't have a housing unit. Two horizontal ones act as runners for it to sit on, then two vertical ones for it to screw into as well.