Commercial door hinges steel - square corner - full mortise standard weight template 3-1/2 x 3-1/2 inch - display-pac bagged (swl) 80 lbs. Finish=satin chrome Five knuckle, 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 fra mes. Equipped with easily seated, non-rising removable pins. Conforms to ANSI/BHMA Grade 3. Includes wood & machine screws.