Abstract: A door is assembled from a plurality of straight lengths of extrusion, with the lengths of extrusion mated with corners at the top and bottom. The top corners are curved and interference fit to terminal ends of the top and side extrusions. The top and side extrusions have an opening into a cavity. As assembled, a continuous screen groove extends through the corners from the top, bottom, and side extrusions. The door includes transverse extrusions having an enclosed cross-sectional profile that are affixed to the side extrusions with alignment ends. The bottom corners interference fit to terminal ends of bottom extrusions and side extrusions.

Abstract: A door is assembled from a plurality of straight lengths of extrusion, with the lengths of extrusion mated with corners at the top and bottom. The top corners are curved and interference fit to terminal ends of the top and side extrusions. The top and side extrusions have an opening into a cavity. As assembled, a continuous screen groove extends through the corners from the top, bottom, and side extrusions. The door includes transverse extrusions having an enclosed cross-sectional profile that are affixed to the side extrusions with alignment ends. The bottom corners interference fit to terminal ends of bottom extrusions and side extrusions.

Abstract: A hinged vent unit is provided having a dome member, connected to a frame for mounting to a vehicle, which is selectively manipulable by an arm connected at or near one end thereof to the dome and connected at another portion thereof to a plurality of selectively engageable stops which, when connected to the arm, prevent the dome from moving relative to the frame.