588,449. Doors. TEASDALE, A. Dec. 29, 1944, No. 26057. [Classes 20 (iii) and 20 (iv) ] [Also in Group XXIII] A door of the type in which a frame 1 has covering sheets 9, which are supported between the frame by lateral and longitudinal strips 5 and 6 jointed together at right angles to one another by intersecting half-lapped joints 7 to form a honeycomb reinforcement which fits into the grooves 4 of the frame, is characterised in that the strips are formed of plywood. The face sheets may have ornamental sinkings or raisings and the reinforcement between the panels is correspondingly varied.