Double-hung replacement window unit

Details Double-hung replacement window unit Double-hung replacement window unit

E - Fixed Constructions

06

B

108/42

E06B 3/44 (2006.01)

Patent

CA 1158927

ABSTRACT OF THE DISCLOSURE A vertically opertive double-hung metal replacement window unit comprises an outer window assembly and an inner window assembly joined together with mortised joints by plastic thermal break members on all four sides. The outer and inner window assemblies have an identical construction and each com- prises a counter balanced lower sash and latched non-counter balanced upper sash. The thickness of the window unit may thus be limited to about three to five inches and is compatible with existing window openings in buildings particularly older dwelling buildings such that it may be easily used to replace an existing window unit without having to make major modifications to the window opening.

362027

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