This classic window style has both top and bottom panes that move up and down, operating independently from each other.<\/p>\n
Reinforced narrow silhouette frame and sash profiles\u00a0make a statement of style with their low-profile design. The result is a beautiful and expanded glass area.<\/p>\n
At the same time, internal chambers increase structural integrity, rigidity and energy efficiency.<\/p>\n<\/div>\n <\/div>\n
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\n Are double-hung windows energy efficient?