C/S has over 35 years of extensive research and development in the field of Specialty Venting. Through innovative venting techniques, C/S has become the leader in specialty venting and field testable solutions. C/S explosion, tornado, flood, fire suppression, smoke and heat vents are all designed to provide you with cost effective, code compliant solutions to your building’s specialty venting requirements. For additional information, visit APC’s parent company at www.c-sgroup.com