A prefabricated refractory brick and hanger strap assembly of the burned or ceramically fired type useable particularly in the construction of suspension ceilings of a furnace. The brick is provided with a generally trapezoidal shaped recess formed and opening at an intersection of a long and short side, and on the interface side most remote from the heat of the furnace. A brick suspension plate is partially embedded in the recess after the brick is fired, and is covered by a cementious motar-like refractory material in a manner preferably flush with the adjacent interface sides, which material, when set, provides an airtight and heat protective coating for the suspension plate. The latter plate is provided with an aperture in the upright projecting part thereof for suspension during construction of the furnace. In another form, the suspension plate is provided at one end with a preformed refractory material corresponding generally to that of the brick material and of a complemental size and trapezoidal or other desired shape to be bonded to the brick to form a permanent connection of the hanger or support plate within the brick recess.