It has a shape like a rectangular top hat, with a hole in the raised rectangular shape. The "brim" of the top hat shape is only on the short sides of the rectangle, and they have notches in them, makes them look like they would slide hook around some posts of some sort. Becasue of these distinguishing features, I was suprised I couldn't find the install locations.
Hopefully this is clear, I can take a picutre of it tonight. My phone is working without it, so I could leave it out, but I know that it serves some function, otherwise it wouldn't be there.
Any information would be greatly appreciated.
Thanks
David