.175 in. x 25 ft. Black Spline is used to hold screening material in the frame channel. Package contains enough to re-screen up to 2 average windows or 1 screen door. This hollow core spline is easy to roll into the screen frame channel.. Color Family: Black. Material: Vinyl. Package Quantity: 1. Product Length (ft): 25 ft. Returnable: 90-Day. Product Diameter (in.): 0.175 in. Product Length (in): 300 in. Product Diameter (in.): 0.175 in. Product Length (ft): 25 ft. Product Length (in): 300 in