Our door operators are listed with ETL (Control Number 3068403), a nationally recognized testing lab as having passed UL 325 safety standards for door operators. ETL certification labels are available for our operators upon request. Open Sesame Door Systems Inc, 1933 Davis St, Ste 279, San Leandro, CA 94577 Conforms to UL 325 Standards Made with Xara Web Designer As Seen Numerous Times On: Call us at 800-OPEN-911 (800-673-6911) 8:30am to 6:00pm Pacific Time