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CRD-501 : Leakage Rated Ceiling Radiation Damper

CRD-501 : Leakage Rated Ceiling Radiation Damper

Model CRD-501 is a round, UL 555C Classified ceiling radiation damper with a UL 555S Leakage Class I rating, providing both radiant heat protection and low-leakage smoke control in rated floor/ceiling assemblies. Designed for circular duct applications, it supports code-compliant life safety performance in a compact configuration.

Product Highlights

Application
Ceiling Radiation
Leakage Rated
Blade Type
Round
Ceiling Penetration
Non-Combustible - Steel
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Features

Actuator Damper Resettable Reusable Link (RRL)
Standard
Optional

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Product Details

Certifications

UL 555C (Listing #R13446)

UL 555S (Listing #R13317)

California State Fire Marshal (CSFM) Listing #3230-0981:0113

Codes

International Building Code (IBC)

National Fire Protection Association (NFPA 90A and 101)

Damper Shape

Round

Fire Resistance Rating

3 Hours or less

Leakage Class

I

Documents

Drawings

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