I bought this for a full size mattress/frame, but I think it's really for a queen.  There are two sets of holes that you can use to connect to your headboard.  If you have a full the holes for the larger queen will be visible and you will have several inches of overhang on each size.  One side of our bed is against the wall, but I feel I need to "hide" the side that is visible with a small table.  It bothers me, but not enough to take the whole thing apart and send it back.

Cons: this should be used for a queen mattress only