Blaine Window HORIZONTAL SLIDING WINDOW CORNERS.Nylon & plastic corners. Other materials. Repair & replacement hardware for major window manufacturers. TRUTH HARDWARE. More than 40,000 WINDOW & Door hardware parts. Any parts for any windows, doors & more.SLIDING WINDOW CORNERS, LOCKS, LATCHES, ROLLERS, SLIDES and more. Custom manufacturing. Special order items. Research Department. Send a sample. FREE CATALOG from Blaine Window Hardware.