Tell Manufacturing Spring Hinge with Square Corners, Stainless Steel, 4" x 4" Door Closers dual on 30 circuits and

dual on 30 circuits and above

rotatable gear housing can be positioned every 90 degrees for operator control

Includes one each of the following chisels: 1/4”

operating system that is thermostatically controlled

bolt on bracket

Tell Manufacturing Spring Hinge with Square Corners, Stainless Steel, 4" x 4" Door Closers dual on 30 circuits andTells Spring Hinges are Grade 1, UL Listed for fire door applications. Our spring hinges include an adjusting spring tension tool with locking pins to hold the springs tension after it is set. Adjustable tension spring hinges allow you to determine how much closing force you can apply to the door.