Items identified as Quick Ship will ship within 2 business days from our warehouse in Babylon, New York. Actual delivery times will vary based on your location. If you are ordering multiple items and not all items qualify for Quick Ship, the order will ship when all items are available to ship. Quick Ship may not apply to multiple quantities of the same product.
Many local codes require that exhaust fans installed in fire-rated ceilings must be protected by dampers, which, in case of fire, protect against the spread of heat and flame. Being fire-rated means the ability of a wall, floor/ceiling, or roof/ceiling to withstand the effects of fire for a specified period of time. NuTone ceiling radiation dampers are designed to protect the openings in 1-, 2-, or 3-hour fire-rated floor-ceiling and roof-ceiling designs. When the temperature of the air passing through the damper exceeds 165°F, the fusible link melts and the thermal fabric across the damper closes automatically to interrupt the airflow by becoming a flame and heat barrier, preventing rapid spread of fire to other areas.
Housings and finishes (motor assembly and grille) sold separately - purchase housings for rough-in and blower assemblies/grilles later for finishing
UL classified (UL standard 555C) for use in 1-, 2-, or 3-hour fire-rated floor-ceiling and roof-ceiling designs
Warnock Hersey Listing allows use in combustible ceilings with ducted fans
High temperature, non-asbestos, reinforced fiber thermal fabric
Galvanized steel frame
165°F fusible link
Stainless steel negator-type closure spring
Available from 50 CFM to 110 CFM
Radiation damper comes attached to housing
Blower assembly will fit into housing without the removal of the radiation damper - one less step in installation process