All metal products manufactured by Telling Industries meet or exceed U. S. Green Building Council LEED® criteria for acceptance in LEED® rating systems. This is based on the LEED® Green Building Rating System for New Construction & Major Renovations Version 2.2. The recycled content of the base metal used in the production of our metal framing members contains, on average according to statistics available from the Steel Recycling Institute, American Iron and Steel Institute and the Steel Framing Alliance, greater than 10% recycled material. All products manufactured by Telling Industries meet or exceed the applicable ASTM Standards for our industry. Mill Certifications or independent laboratory test results for raw material are available upon request. Certifications View PDF Material Certifications Material Safety Data Sheet