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Ceiling radiation dampers are used to provide the required fire and heat radiation protection for HVAC penetrations of floor ceiling and roof-ceiling assemblies having a restrained or unrestrained assembly fire resistance ratings of 2 hour or less, in accordance with UL263.
Standard fire dampers (1½ hr. and 3 hr.) do not provide the necessary heat radiation protection that is obtained by using ceiling radiation dampers.
Ceiling radiation dampers are also called ceiling fire dampers, radiation dampers, and radiation shields.
Two Bladed Uninsulated Static Rectangular Ceiling Radiation Damper 291
Two Bladed Insulated Static Rectangular Ceiling Radiation Damper 293
Four Bladed Insulated Static Ceiling Radiation Damper 295
Two Bladed Uninsulated Static Round Ceiling Radiation Damper 297
Two Bladed Insulated Static Round Ceiling Radiation Damper