Patent ID: 8915031

Claim:
A system for mounting a door to a structural member, the system comprising: a z-bar member comprising: a longitudinal axis extending along a length of the z-bar; a web portion comprising a first plate for mounting to a first surface of the structural member; and a flange portion comprising a second plate for positioning against a second surface of the structural member, wherein the first plate is operatively attached to the second plate along a barrel member; and at least one fastener engageable with the first plate of the z-bar member, the fastener comprising a shaft and a head extending from one end of the shaft; wherein the first plate comprises at least one mounting aperture extending lengthwise in a direction of an axis that is generally perpendicular to the longitudinal axis of the z-bar member; wherein the at least one mounting aperture comprises a first opening and a second opening separated by an intermediate opening, wherein the first opening, second opening, and intermediate opening are aligned along the axis of the aperture; wherein the first opening is larger than the second opening, and wherein the intermediate opening is smaller than both the first opening and the second opening; wherein the first opening of each of the mounting apertures is located further from the barrel member than the second opening of each of the mounting apertures; wherein each mounting aperture has an outer shape that is symmetric about its respective axis; and wherein the intermediate opening of each aperture is smaller than the head of the fastener.