Abstract: A demountable wall assembly utilizing uniquely formed studs of magnetic material having wide, flat flanges along the edge thereof equipped with low-height, outturned tang means therealong. The tang means cooperate with magnetized strips secured to the rear of wall plaques to hold the plaques against planar movement while the strips are held magnetically seated against the stud flanges. The studs are secured to headers crosswise of their opposite ends. A first finish strip secured to one header embraces and conceals the adjacent end edges of the plaques, and a second finish strip conceals fastener means holding the other plaque ends to the second header.