LCN 4041 AL EDA Extra Duty Arm Door Closer For Aluminum, hollow metal or wood swinging doors and frames Adjustable for interior doors to 5'0' and exterior doors to 4'0' Nonhanded arm mounts pull side or top jamb with shallow reveal, Aluminum Powder Coat Finish Includes regular arm, plastic cover, self reaming and tapping screws Extra Duty Arm (EDA)