Bifold door or window transoms includes a rectangular box section

摘要

A door or window transom provided in part by an extrusion having a hollow box section (1) to be positioned entirely inwardly of a building envelope. The hollow box section (1) is rectangular in cross section with the major axis of the at least rectangular form adapted to lie vertically in use. Adjacent to one face of the rectangular form, on one side that is proximate to a glazing or other panel, there are two spaced seal retention features (6). Interposed between the two seal retention features is a part of the extrusion to extend inwardly of the glazing or other panels. Extending exteriorly of the glazing or other panel is another hollow box section (7) that is integrally formed with the first hollow box section (1).