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.

L89
Photo not available
Two Bladed Uninsulated Static Rectangular Ceiling Radiation Damper L91

Two Bladed Insulated Static Rectangular Ceiling Radiation Damper L93
Photo not available
Four Bladed Insulated Static Ceiling Radiation Damper L95

Two Bladed Uninsulated Static Round Ceiling Radiation Damper L97

Two Bladed Insulated Static Round Ceiling Radiation Damper