A furnace wall particularly for the rear wall and the like of an industrial furnace having a furnace framing with wall posts. Horizontal carrier rails elevationally slidably mounted on the wall posts locate the wall-forming refractory bricks of each two consecutive courses of bricks. The bricks have complementary cooperating recesses to embrace the carrier rails. Fastening members are provided for the carrier rails and locking elements bearing against the wall posts releasably engage the fastening members. The fastening members are angle brackets projecting externally beyond the thickness of the wall posts with upwardly pointing free angle ends. The locking elements may be ladder-like locking elements having at least one stringer and a plurality of transverse rungs mounted on the sides of the wall posts facing away from the furnace interior so that the rungs interpose themselves between the wall posts and the free angle ends in a vertical row.
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