Abstract: A hold open device a hinged door which is connected to a door frame by a pivot arm. The arm includes a follower which rides in an upper channel of the door. The hold open device includes a detent positioned between a cam part and a shock absorber and stop which secures the arm follower when the door is in its open position.

Abstract: A corner construction, forming a connection joint, for a rectangular frame for a storm door or window formed of extruded aluminum box-like frame members. One frame member is proportioned to nest within the side walls of the other frame member, and the frame member ends are especially trimmed to form a rigid non-sagging interconnection. The wider frame member is trimmed to form a 45.degree. wall partially extending through the frame member terminating at a straight section, while the intersecting frame member is trimmed with a V-shaped notch spaced from its butt end with one wall defining the notch proportioned to engage the 45.degree. sloping wall of the wider member, and the butt end of the narrower frame member engaging an inside abutting connecting web of the wider frame member. Each frame member is further formed with a stepped interconnecting web which extends along the 45.degree. abutting surfaces to provide a substantial area of contact.