Tell Manufacturings 900 Series Door Closer is designed for interior commercial use and comes with Tri-Pack hardware for various installation options. Heavy-duty aluminum commercial door closer complies with ANSI A156. 4, UL/ULC listed up to 3 hour fire rated. 900 Series Door Closer. Adjustable spring tension 1-6. This product is finished in Aluminum. UL/ULC Listed. Non-handed. ADA Compliant. Tri-packed for various installation options. Tell Manufacturings 900 Series Door Closer is suitable for a wide variety of interior commercial applications, including heavier doors.