WINDOW RESEARCH INSTITUTE

Projecting window

A window where the sash slide along a rail installed on the window frame, swinging open outward while shifting toward the center. If the rails are positioned at the top and bottom of the frame, allowing the sash to open vertically, it is called a ” projecting casement window.” If the rails are placed on the sides of the frame, enabling the sash to open horizontally, it is referred to as a ” top-hung projecting window.”

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