This Prime-Line P 7843 Flat Screen Spline is constructed of vinyl and comes black in color. The spline measures 5/16 inch (.3125) wide x 0.092 inch tall x 100 ft. long and it is used for installing fiberglass screen mesh into aluminum screen frames. This type of screen spline is installed by laying it flat into the spline channel (over the fiberglass screen mesh) and inserting the inner edge of the screen spline under the lip of the screen frame. The spline can then be rolled in along the outer edge of the screen spline.

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