Patent ID: 7703250

Claim:
A ventilated curtain-type facade structure comprising: extruded ceramic facade panels for engagement in panel holders, wherein the each of the facade panels comprises: a front panel wall interconnected with a rear panel wall; wherein the rear panel wall includes at least one rear head rebate having a first thickness and at least one rear foot rebate having a second thickness, wherein the first and second thicknesses are transverse to a direction of extrusion; wherein the rear panel wall includes a rear surface and at least one front surface, wherein the front surface of the rear panel wall extends between a first end and a second end and, with the front panel wall, defines at least one core hole in the direction of extrusion; wherein the at least one front surface of the rear panel wall has at least one elevated portion disposed between the first and second ends of the front surface, wherein the elevated portion extends with a constant cross section in the direction of extrusion; and wherein the elevated portion extends further toward the front panel wall than another portion of the front surface of the rear panel wall, and wherein the rear panel wall has a thickness, between the highest point of the elevated portion and the rear surface of the rear panel wall, identical to at least one of the first and second thicknesses.