Product Info Catalog Hardware Window Screen 500-Ft. Gray Vinyl Screen Retainer Spline. 500-Ft. Gray Vinyl Screen Retainer Spline. Request a Quote UPC: 49793076823 Manufacturer: Prime Line Products SKU: 123633 Model Number: P 7682 .175" x 500', Gray, Vinyl Screen Retainer Spline, Round, Hollow Core, Serrated. For Aluminum & Fiberglass Screening, Roll.