Greenheck has introduced the industry’s first line of fire and combination fire/smoke dampers approved for installation in horizontal, nonconcrete, fire rated barriers. The
DFD, FD and FSD Series dampers can now be specified for use in UL floor/ceiling design I503, which is a two-hour fire rated floor/ceiling assembly made from steel studs and gypsum board. This installation method simplifies the task that designers and contractors face trying to protect duct penetrations at the top and bottom of fire-rated building shafts. Installing these dampers in a horizontal nonconcrete barrier results in more usable space for the owner, more flexibility for the design professional, and reduced installation time for contractors.