FEATURES - This medium duty closer controls the traffic in and out of your space and automatically closes the door after every opening. MEASUREMENTS - For exterior doors up to 30” and interior doors up to 38”. SPECIFICATIONS - Has a 3-hour UL fire rating. This closer fits on top jamb, standard or parallel positions with a 180-degree opening range. INSTALLATION - Compatible with most commercial doors. QUALITY YOU CAN TRUST - A global leader in security-related products and services, the Brink's name is synonymous with top quality products to keep you and your belongings safe.