Part Number: 692 - Truth Folding Nailing Fin Sill Sold: Individually (For runs longer runs the nail fin can be pieced together in the frame. Size: 5 or 6 foot piece once stock of 5 foot runs out only 6 foot will be available to order Sample: If you order a Sample it will be approximately 2 inches long. If you selected sample you will receive a small cut pieces for color/fit reference only. No returns on samples nail fin has a hinged flexible Kurf so it can lay flat and then bend at 90 degrees when installing. Manufacturers like Hurd used this nail fin on the bottom of their windows for ease of shipping as it lays flat. But can be used on all 4 sides of the window for reinstallation. Known to have been used along the bottom of Hurd Horizontal Sliding Windows and Casement windows
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