Abstract: A screw anchoring device for aperture sealing attachment with an apertured panel to confine insulating material foamed in place between the panel and an attached spaced wall or other structure. The device includes a plate member having corners and a generally flat portion lying in a plane with a central aperture forming a helical screw receiving impression. The device also has a pair of upstanding tabs projecting from one face of the generally flat portion of the plate member at opposite sides of and adjacent to the screw impression. The plate member has a raised portion formed from the plate member at the corners and along each of two opposite edges of the flat portion of the plate member. These raised portions are convexly curved upwardly from the plane of the flat portion and from the face opposite from the face with the upstanding tabs and the corners of the plate member are semi-spherical shaped.

Abstract: A shelf assembly particularly adapted for use in a household refrigerator comprises a cantilever supported frame and a sliding shelf which may easily be removed from the frame. The frame includes a pair of shelf guides or tracks which, in a preferred embodiment of the invention, are inwardly extending horizontal flanges attached to frame side members. The shelf includes a pair of shelf side members which are slidably supported on the cooperating upper surfaces of the horizontal flanges. Attached near the rear corners of the shelf are outwardly extending projections which ride against the lower surfaces of the flanges to prevent the rear of the shelf from moving upwardly. A stop prevents the shelf from being pulled out farther than the extended position.