LEED®, which is an acronym for "Leadership in Energy and Environmental Design," is a rating system, developed by the U.S. Green Building Council, which serves to promote sustainable buildings, by awarding points for reducing energy use, improving indoor environmental quality and promoting a whole-building approach to sustainability. LEED® enables "Credit Points" to be earned in seven (7) categories. One of these categories, "Materials and Resources," enables points to be earned for "Recycled Content." The purpose of this GIB is to clarify the current requirements for recycled content claims for glass. This document was first published in April 2010. This edition of the bulletin provides the most recent update and published in October 2017.