Part of a sweeping $100 million complete overhaul of the 42-story, 742,000 SF 330 Madison Avenue, MdeAS designed a custom curtain wall system to be installed over the existing exterior wall. The new curtain wall is comprised of high performance insulated glass units, greatly enhancing the energy performance of the building envelope. Completing the transformation, MdeAS also expanded and renovated the lobby, introducing a palette of dark granite floors, beige marble walls and a uniquely designed ceiling and lighting system punctuated by a richly-veined marble feature wall.