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Certification and Licensing

List of Approved Nationally Recognized Testing Laboratories (NRTL)

Underwriters Laboratories Inc. 333 Pfingsten Road
Northbrook, IL 60062-2096
847-272-8800
Wyle Laboratories, Inc. 7800 Highway 20 West
P.O. Box 07777
Huntsville, Alabama 35807
256-837-4411