Patent ID: 8468758

Claim:
A sliding door assembly comprising a support frame and a sliding door, the support frame comprising upper and lower support frame members between which the sliding door is received, a side panel attachable so as to extend between said upper and lower support frame members, and a cavity defined between the upper support member, the lower support member and the side panel into which the sliding door is at least partially slidable to move into an open position, wherein the side panel comprises a first panel portion and a second panel portion that slide relative to each other and overlap to enable the distance between the upper and lower support frame members to be altered during installation of the support frame, wherein the panel portions have corrugations configured such that, when the panel portions overlap, the corrugations interlock to prevent movement of the panels relative to each other, other than sliding in a direction extending along the length of the corrugations, wherein the corrugations form a tenon and a corresponding mortise such that the corrugations on opposing panel portions interlock to form a dovetail joint, wherein the corrugations on each panel portion form a plurality of tenons and mortises to interlock with a plurality of tenons and mortises formed on the opposing panel portion.