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Square galvanised steel fire damper 13-3/4 inches wide

Dayton

Dayton Square Fire Damper 13-3/4 In. W hardware

SKU CH-YADM-58FTW

Square fire damper rated for 1-1/2 hour fire resistance in low-pressure HVAC systems

  • TypeStatic With Fire Resistance Rating Less Than 3 Hou
  • 1-1/2 hour fire rating protects duct penetrations
  • Fusible link releases at 165°F for automatic closure
  • 22-gauge galvanized steel resists corrosion in HVAC systems
  • .925 sq ft free area maintains airflow efficiency
  • UL 555 and NFPA 80/90A/101 compliance meets code requirements

Square Fire Damper for HVAC Systems

This Dayton square fire damper fits 14-inch nominal duct dimensions and carries a 1-1/2 hour fire rating under UL 555. It is intended for horizontal mounting in low-pressure HVAC installations where static operation meets code requirements. The galvanized steel construction provides the listed free area of 0.925 sq. ft. for airflow.

Static Mounting With Retaining Angle

Installation follows a static horizontal orientation using the recommended 2TGH4 retaining angle, which is not included with the damper. The fusible link releases at 165 degrees Fahrenheit to close the blades automatically during a fire event. Clearance for the 3-11/16 inch damper depth must be verified inside the duct sleeve before mounting.

Airflow Capacity and Fire Rating Limits

The 13-3/4 inch square opening delivers the rated free area for typical low-pressure supply or return runs. The assembly is rated for fire resistance of less than three hours and meets NFPA 80, 90A, 101, IBC, CSFM and NYC MEA standards. It is not suited for high-pressure systems or applications requiring a longer fire endurance period.

Highlights

  • 1-1/2 hour fire rating protects duct penetrations
  • Fusible link releases at 165°F for automatic closure
  • 22-gauge galvanized steel resists corrosion in HVAC systems
  • .925 sq ft free area maintains airflow efficiency
  • UL 555 and NFPA 80/90A/101 compliance meets code requirements

Specifications

BrandDAYTON
TypeStatic With Fire Resistance Rating Less Than 3 Hou

Questions about this item

How do I verify the fusible link activates at 165 degrees F after installation?

The fusible link is rated to release at 165 degrees F, allowing the damper blades to close automatically when that temperature is reached in the duct.

What hardware is included with the square fire damper and what must be sourced separately?

The damper itself is 22 ga. galvanized steel measuring 13-3/4 in. by 13-3/4 in.; the recommended retaining angle 2TGH4 is not included and must be purchased separately.

Which fire-resistance rating version should I select for a 1-1/2 hour rated barrier?

This model carries a 1-1/2 hr. fire rating and meets UL 555, NFPA 80, 90A, 101, IBC, CSFM and NYC MEA standards for that duration.

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