WINDOW STRUCTURE FOR SUPPORTING A SHEET OF POLYMERIC FILM

摘要

A window structure having a film supported optically flat between panes of glass, with the film secured at two opposing ends by a strip of metal grasping the film. The strip is held in a retainer resiliently secured in the glazing channel of the window. The glazing frame also includes side pieces and corner keys which support the opposed channels in spaced fixed relationship.