Abstract: A frame structure for casting a concrete building panel has a plurality of panel edge molding frame members with a generally U-shaped cross-section, a plurality of panel corner frame members with a configuration which corresponds to the angle of the corner of the panel. A number of edge molding frame members and the corner frame members are assembled in a panel molding frame with a length and width corresponding to the length and width of the panel to be molded with the ends of the edge molding frame members connected by the panel corner frame members, and with the opening of the U-shaped cross-section facing inwardly of the panel molding frame. Connectors rigidly connect the edge molding frame members to each other and to the panel corner frame members and a liner structure is provided in the interior of each of the edge molding frame members. The surfaces of the liner structure facing the space within the panel molding frame has a shape complementary to the shape of the edge of the panel to be molded.

Abstract: An insulating apparatus for fitting over the inside frames and glass of glass doors and windows, said apparatus having an expanded polystyrene frame fitted over the inside window or door frame completely covering the inside frame from the glass to the surrounding building structure, and said frame being removably held in position by fastening means which are removably attached to the inside frame. Covering means of sheet vinyl material is stretched over the polystyrene frame and removably held in position above the glass surface by being held in a channel groove in the perimeter of the polystyrene frame by an extruded plastic retaining strip fitted into the groove.