I'm installing a pair of vanity lights in our new bathroom. One of them, conveniently, needs to mount directly over a stud which precludes installing a regular octagon box. Instead, I'll have to use a saddle box like this:
Click to embiggen. Source: Lowes.com
Installation of the box looks quite straightforward: Install the small screw (hidden behind the bolt visible at the front, then make pilot holes and drive the two larger bolts.
Once I've done that, though, I see nothing to attach either the ceiling fan they claim can be hung from this nor the wall sconce I plan to put on this. My light comes with an adjustable
x shaped brace and some 8-32(?) screws that would normally go into the mounting holes in a "normal" octagon box like this:
Note the holes on opposite corners. What I'm not seeing is the place to put the screws in the saddle box I'm going to have to use. What obvious thing am I missing?
How do I attach a wall sconce to this box once the box is on the wall?