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SSSMDR-501 : Round Stainless Steel Smoke Damper

SSSMDR-501 : Round Stainless Steel Smoke Damper

The SSSMDR-501 is a Class I leakage-rated round smoke damper constructed from 304 stainless steel for enhanced durability and corrosion resistance. Designed for vertical or horizontal installation, it offers flexibility in system layout and coordination. With airflow and leakage ratings in either direction, the SSSMDR-501 delivers reliable, code-compliant smoke containment in demanding HVAC applications.

Product Highlights

Blade Type
True Round
Blade Material
304SS
Blade Orientation
Horizontal
Duct Connection
Round
Leakage Class
I
Maximum Pressure Rating (in. wg.)
4
Maximum Velocity (fpm)
4,000
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Features

Actuator Blade Frame
Standard
Optional

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Product Details

Certifications

UL 555S (Listing #R13317)

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

CAN/ULC S112.1 Classified Smoke Damper

Codes

International Building Code (IBC)

National Fire Protection Association (NFPA 90A, 92, 101, and 105)

Frame Material

304SS

Maximum Temperature (°F)

350

Documents

Drawings

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