Abstract: A storm door assembly for a doorway to a building comprises a frame configured for hinged mounting at a doorway of a building. The frame comprises an opening through the frame, the opening comprising a depth and at least two channels disposed in parallel around an inner surface of the depth. At least two removable frame inserts are provided, each comprising a front surface, a rear surface, and an insert perimeter comprising a plurality of recesses positioned about the perimeter. A plurality of twisting cams are each disposed within one of the plurality of recesses and not extending beyond the front and rear surfaces, and the at least two frame inserts are each held in a fixed position with respect to the frame via placement of the twisting cams within the at least two channels.