Replace worn or torn screen spline and lock fresh screen mesh into a window or screen door frame. A round vinyl profile with a serrated grip face and hollow core wedges into the channel cleanly under a standard convex spline roller, holding fiberglass or aluminum mesh tight without slipping back out over season-to-season temperature swings.

• Diameter: .120"
• Length: 250 Ft
• Color: Black
• Material: Top-quality vinyl with serrated outer surface for positive grip inside the frame channel
• Profile: Round cross-section with a hollow core that compresses during installation and rebounds to fill the channel uniformly
• Compatible with both fiberglass and aluminum screen mesh
• UV-stabilized vinyl formulation for prolonged exterior service in direct sun and weather
• Color guidance: black is preferred where the spline sees direct sun on window screens, since black vinyl hides UV-induced fade; gray blends with mill-finish aluminum trim, awning windows, and door insert frames

Tip: This is the smallest residential size, used in standard older aluminum window frames with shallow channels carrying light fiberglass mesh. Always measure the diameter of the old spline before buying replacement -- the new spline should match the original within about 1/64" to ensure a tight seat. If the size feels borderline between two diameters, pick the slightly larger size since the hollow core will compress to fit. Use a convex spline-roller wheel to seat the spline into the channel; the concave wheel on the opposite side of the same tool is used first to press the mesh into the channel before the spline goes in. A 250 Ft roll covers a full-house screen replacement or stocks a small contractor truck.