Prefabricated metal frame for window or door bay

摘要

Metal doors and windows. The metal frame comprises at least three profiled elements 10, 11 which together form an outer profile 14 comprising a fold 15 continued via a turned-back edge of angle bracket 19 having ondulations 20 parallel to the length of the turned-back edge and holes 22 or similar formed in a staggered fashion at least over the entire width of the turned-back edge. Application to sub-frames of window bays.