Abstract: A flexible curtain rollup door includes a drum mounted on a door frame and drivenly connected to an electric right angle gear motor unit. The frame includes opposed channel shaped guide tracks for receiving opposed side edges of a door curtain. Spaced apart elastically deflectable combination curtain stiffening struts and windlock members are secured to the curtain and include opposed windlock parts receivable in the guide tracks and configured, respectively, to provide for releasing only one side edge of the curtain from its guide track. A flexible transverse bottom bar includes plural side by side flexible bags filled with particulate material, secured to the curtain bottom edge and enclosed by a flexible envelope member. The curtain bottom edge includes a stiffener formed of interconnected links.

Abstract: An electric fence is disclosed for keeping selected small animals out of an enclosed area. The electric fence has an electrically conductive screen, a plurality of support members for supporting the screen, at least one electrically conductive element positioned adjacent to the screen on a side of the screen opposite the enclosed area, the electrically conductive element mounted to the fence by a plurality of mounting elements, the electrically conductive element being operably couplable to an electric charge generator, and the screen being electrically grounded. The electric fence may be mounted adjacent to a perimeter fence by a distance greater than the distance the selected animal can jump.