WINDOW ASSEMBLY HAVING AN OUTER SASH FRAME SUPPORTING A REMOVABLE INNER SUB-SASH FRAME BONDED TO INSULATED GLASS PANELS

摘要

A rectangular outer sash frame has extruded plastic frame members with inwardly projecting flange portions overlapping a peripheral edge portion of an outer glass panel of an insulated glass unit. A removable inner sub-sash fra me interconnects with the outer sash frame and has extruded plastic frame members with inwardly projecting flange portions overlapping and bonded to a peripheral edge portion of at least one of the glass panels. Extruded plasti c glazing members have flange portions overlapping a peripheral edge portion o f the inner glass panel and include retaining flange portions projecting betwe en the outer sash frame and the inner sub-sash frame. In another embodiment, th e sub-sash frame has integrally extruded parallel spaced walls projecting inwardly between and bonded to the peripheral edge portions of both the inner and out er glass panels.