Abstract: This invention relates to the preparation and packaging of refractory blocks into prefabricated panel units for transportation to a site, a refractory wall constructed of the prefabricated units and the method of forming a wall. The blocks, in a panel unit, are supported upon a pallet, enclosed by a relatively moisture-tight wrapper, and bound to a structure for lifting the stack of blocks. The panel units are adapted to be positioned in abutting relation, lateral and vertical, with each other and preferably include wedge-shaped blocks at prescribed locations for facilitating erection of a wall adjacent a support structure.