Model CFD-521-BT 1 hour - ceiling radiation damper R-6.3 or 8.0 insulated outlet box - butterfly style blade


The CFD-521-BT ceiling radiation damper employs butterfly style blades for point-of-origin control of radiant heat in HVAC systems. The CFD-521-BT is installed horizontally in the ceiling membrane of combustible and non-combustible assemblies with a fire-resistance rating up to and including 1 hour.