CRD-50-4X Ceiling Radiation Dampers – 4″ Single BladeThe CRD-50-4X – 4″ Single Blade Ceiling Radiation Damper has been UL tested and labeled for protection of ceiling openings in fire rated floor/ceiling assemblies with fire resistance ratings of 3 hours or less. The CRD-50-4X Ceiling Radiation Damper can also be applied to steel lay-in style ceiling diffusers up to 4”x24” maximum size. The CRD-50-4X Rectangular Ceiling Radiation Damper is UL fire rated Ceiling/Floor and Ceiling/ Roof Assembly L-558, L562, L563, L574, L585, P533, P544, P545 and P-547
CRD-50-4X Ceiling Radiation Damper Technical Specifications
- UL listed link (165oF Standard)(Max 212oF)
- Blades 22 (0.853mm) Ga. Galv. Steel
- Roll-formed frame 22 (0.853mm) ga. Galv.
- Steel duct drop (by others).
UL 555C Fire Resistance Rating
Fire resistance rated 3 Hours
Building materials rated 3 Hours or less Model CRD 50-4X meets the requirements for fire dampers established by:
CSFM California State Fire Marshal
Fire Damper Listing (#3225-1417:101)
- Maximum size 4”x24”
Minimum size 4”x4”
- “Ceramic insulation is not UL required on
Lloyd Industries dampers with area less than 80
Manufacture Limited Warranty
Products manufactured by Lloyd Industries are warranted to be free from defects in material and workmanship for a period of 12 months after being installed or placed in service, but in no instance shall the period of warranty be longer than 18 months from the date of original shipment by Lloyd Industries.
Lloyd Industries warrants that it will furnish replacement material, or at its option, repair any product of its manufacture that is proven to Lloyd Industries satisfaction to be defective in material or workmanship during this described warranty period… [Click Here to Download Full Warranty]