Check the listing for details. Screen Spline 12M/39.37Ft PVC Sealing Strip Retainer 3.5mm OD Black. Condition: New, Made in United States. Listed at 12.83 USD. [Material] - The spline is made of PVC material and a hollow core structure with a serrated and round shape. High toughness, not easy to age and has long-lasting durability.[Features] - Dustproof, windproof, sound insulation, replace aging sealing strip for door and window and keep the screen in place and tightly.[Wide Range of Applications] - Suitable for most window and door screens. Such as repairing, replacing, or securing window screens, patio screens, garden screens, sliding doors, patio doors, entry doors, etc.[How to Use] - Measure the groove size before purchasing; Prepare tools for replacing, such as a ruler, scissor, screen rolling tool, etc; Cut a suitable screen size, use a rolling tool to roll the screen mesh and spline into the groove slowly.