The Universal Hardware Heavy-Duty Bronze Commercial Door Closer is suitable for interior commercial applications for doors ranging from 44 lbs to 188 lbs . The latching and closing speeds are adjustable and the closer meets ADA requirements. For heavy-duty commercial indoor use.. All metal body construction for added durability. Adjustable sizing 1-5: provides ability to use in a variety of applications from light to heavy duty. Grade: Meets ANSI Grade 1 standards. ADA Compliant: Meets ADA requirements, ensuring accessibility to all disabled persons. UL Listed: 3-hour fire rated for added protection and meeting building requirements. Interior doors: Left or right hinged doors up to 200 lbs. and 54" wide. Exterior doors: left or right hinged doors up to 200 lbs. and 42" wide. Opening range: 180-degree for added convenience and pass-through space. Mounting: Standard, top jamb or parallel mounting. Limited 10 year warranty. Commercial / Residential: Commercial. Door Closer Operation: Spring. Interior/Exterior: Interior. Door Closer Features: Adjustable Closing Speed