Chicago Metallic® 660 Wide Face 1-3/8" is available in a heavy-duty design and is build with HDG 40 steel and an aluminum cap. Featuring seismically approved stab-end cross tees, this larger profile drop ceiling grid offers a bold design, and may help hide excess damage to acoustical panels. Every Chicago Metallic™ grid system is third party certified to meet ASTM standards and is listed with ICCES Evaluation Services, for more information reference report ESR-2631.