The DFD-150X series is for use in walls, floors, and partitions with fire-resistance ratings less than three hours. This model has an integral sleeve. Dynamic-rated-fire dampers are in HVAC systems that remain operational in the event of a fire.

Attaches to side of duct with self-drilling screws (not provided) Rubber pad prevents air leakage and dampens vibration Simple height adjustment using the built-in release pin prior to applying load Conforms to DW144 Class D Ideal for rectangular duct suspended close to the ceiling; can also be used for multi-tiered installations Supplied as a ready-to-use kit comprising a length of cable with preattached end fixing

The DFD-150X series is for use in walls, floors, and partitions with fire-resistance ratings less than three hours. This model has an integral sleeve. Dynamic-rated-fire dampers are in HVAC systems that remain operational in the event of a fire.