Product Info Catalog Building Materials Windows Screen Accessories 3/4 x 5/16-Inch Gray Nylon Screen Frame Corners, 4-Pack 3/4 x 5/16-Inch Gray Nylon Screen Frame Corners, 4-Pack Request a Quote UPC: 49793077271 Manufacturer: Prime Line Products SKU: 877944 Model Number: PL 7727 4 Pack, 3/4" x 5/16", Gray, Nylon Screen Frame Corners, Square Cut, Use With #PL14077 Screen Frame.