Profile: Door Spring Supplies Co. is a supplier of automatic doors, manual doors, window controls, car park barriers, steel doors, roller shutters, access control, and emergency exit devices. We also supply, repair, maintain, and install door & window controls. We can provide disabled automatic door operators, suitable for both commercial and domestic installations, self-closing springs, and transom closers to aluminum door systems. We offer a wide range of access control products including telephone, video, digital & mechanical, all suitable for office and main entrance doors. The Stanley Magic Force™ is a heavy duty operator that is field adjustable for full energy and low energy applications. The operator is designed for impressively quiet performance, and provides easy opening and positive closing under diverse conditions. The Magic ForceT operator will resist wind and stack pressure conditions to maintain smooth controlled operation.