Prime-Line P 8123 Screen Retainer Spline, .145-in, Foam, Black, 500-feet Product Description This screen retainer spline is constructed of springy polyethylene foam and it is black in color. Foam screen spline is an excellent substitute for vinyl spline, and it is used to hold screening materials to 7/8? x 5/16? extruded screen frames. This retainer spline is .145 (9/64?) inches in diameter and comes in a 500 foot roll. From the Manufacturer This screen retainer spline is constructed from vinyl. It features a round hollow serrated core. This type of spline is used to hold screen material to window and screen door frames. Features Used by a variety of screen frame manufacturers Flexible foam core 0.145 in. diameter Black polyethylene Smooth finish 500 ft. roll USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.