Prime-Line 0.140" Dia. x 25' L. Vinyl Screen Retainer Spline is a versatile and essential component for installing or repairing window screens made of materials like aluminum or fiberglass. This spline is crafted from high-quality vinyl and features a round, hollow core with serrated edges that firmly grip and secure the screen material in the window or door frame. With a 0.140-inch diameter, it is suitable for various screen sizes and works ly for both new installations and screen s. It ensures the screen material stays securely in place, providing effective protection against insects and debris while allowing proper ventilation and clear visibility through the screen. Model Number: P7633