USG notes that the recycled content in its Levelrock SRB and SRM-25 products can contribute to LEED points. Levelrock SRB is a sound reduction board that contains almost 50 percent recycled content, 17 percent of which is post-consumer. Levelrock SRM-25, a sound reduction mat, features 15 percent pre-consumer/post-industrial material.  For details, circle 294 on the Reader Inquiry Card.