The type of spline varies by system.

Original Screen Tight - 0.175-in rubber spline for standard fiberglass screen or 0.160-in spline for aluminum or specialty screens such as SuperScreen or pet screens.

MeshGuard - Proprietary MeshGuard spline. Features a rounded edge and orange indicator that matches the MeshGuard screen so code inspectors know the proper components have been used.

Fast Track - Standard flat spline

Mini Track - Special Mini Track square spline. 0.175-in Round spline sometimes works as well if you are using a thicker screen material.

Screen Wall - Standard flat spline or MeshGuard spline for an extra tight hold.

Screen Block - This system uses a retainer strip, not spline.