Abstract: A fenestration assembly includes a plurality of lineal segments joined at corners. Each of the lineal segments extend between first and second ends. One or more of the lineal segments of the plurality of lineal segments is a composite lineal segment and includes a first component lineal segment and a second component lineal segment. The first and second component lineal segments are coupled at an assembly joint in an assembled configuration.

Abstract: A portable folding orthopedic seat unit for use on a chair, automobile seat, or the like. A seat member is hinged to a back member. Vertical tracks extend from the bottom to the top of the back member and support a back-support assembly, comprising two separate, generally elliptically-shaped, centrally extending padded back-support members, spaced apart from each other, and a connecting member joining them together. The connecting member also serves to transfer forces from one back-support member to the other. Two strips that adhere to each other on contact are used to hold the assembly at a selected vertical position on the tracks.