Product Info Catalog Building Materials Windows Screen Accessories 5/16 x 7/8-Inch Metal Miter Screen Frame Corners, 20-Pack 5/16 x 7/8-Inch Metal Miter Screen Frame Corners, 20-Pack Request a Quote UPC: 49793159779 Manufacturer: Prime Line Products SKU: 212933 Model Number: PL 15977 20 Pack, 5/16" x 7/8", Metal Miter Screen Frame Corners, For Use With #PL15974, #PL15975 & #PL15976 Screen Frame.