Spline is rolled into aluminum frame to hold the screening material in place. There are two basic types of spline flat and round.
Round spline is generally used for window screens and screen doors.
Round Spline Diameters : .090", .135", .150", .185", .250"
Available in 100 foot or 15 pound rolls
Flat Spline is .025" thick and generally used for screen rooms and some screen doors.
Available in 100 foot and 1000 foot rolls