The Vevor window screen spline is a flexible PVC retainer designed for repairing and replacing window and door screens. Its hollow serrated design helps create a secure anti-slip hold that keeps screen mesh taut in the frame. The 100' length can be cut to fit a variety of repair jobs. It is built for indoor or outdoor use with waterproof, moisture-resistant, and sunproof performance. Compatible with metal aluminum and wooden frames when the channel size matches.