Prime-Line 0.185" Dia. x 25' L. Vinyl Screen Retainer Spline is a versatile and essential component designed for installing or repairing window screens made from materials such as aluminum or fiberglass. Crafted from high-quality vinyl, this spline features a round, hollow core with serrated edges that firmly grip and secure the screen material within the window or door frame. Its 0.185-inch diameter makes it suitable for various screen sizes, ensuring a secure fit for both new installations and screen s. This spline helps keep screens in place, providing effective protection against insects and debris while allowing for proper ventilation and clear visibility through the screen. Model Number: P7941