Commercial 5 knuckle 4 inch by 4 inch steel door hinge with square corner. A full mortise standard weight template with an 85 lbs safe working load limit in a satin brass finish. Designed for use on internal or external doors of medium weight and average frequency. Commercial grade with thicker gauge and more durable design than standard hinges. Template screw hole location for use on either wood or hollow metal doors and frames. Equipped with non-removable pins. Conforms to ANSI/BHMA Grade 3. Includes wood & machine screws.