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2019 Upvc window double glazing swing vinyl hurricane impact pvc casement window with high quality on China WDMA Type:Single Hung Windows aluminum windowsProduct Description 2019 Upvc window double glazing swing vinyl hurricane impact pvc casement window with high quality PVC Hung Windows Attractive, durable and simple to operate. These are the core values of a Single Hung Window. This window has a top sash that is fixed in place while the bottom sash slides up and down and can be removed for ease of cleaning. Add to that its clean design that complements most architectural styles and you are sure to