The Pei Cobb Freed designed National Constitution Center was the first museum to use StoneLite® panels. The exterior facade and interior walls feature 29K sf of StoneLite® limestone and granite panels. The interior panels were installed over steel stud framing with an average weight of only 60 lbs. Some panels were fabricated to various angled corner shapes while others were concave or convex shaped. The fabricated lightweight natural stone panels resulted in a fast and easy installation.