Prime-Line 0.230" 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 within the window or door frame. Its 0.230-inch diameter makes it suitable for various screen sizes, i for both new installations and screen s. By holding the screen material securely in place, it helps protect your home from insects and debris while maintaining proper ventilation and clear visibility through the screen. Model Number: P7644