
Disclosed herein is an improved combination of a hollow member and a backing member to be inserted therein. Another member such as a hinge is secured to the hollow member by machine screws which extend through the hinge and the wall of the hollow member and are tightened in threaded holes in the backing member. The hollow member is provided with an inwardly extending pawl and the backing member is adapted to be placed in a desired position in the hollow member by engagement with the pawl. When a...











