Dayton
Dayton 20CK17 Sleeved Fire Damper 6x6 Square Steel 22 ga UL 555
A 6-inch square fire damper with sleeve for vertical HVAC installations, rated 1-1/2 hours per UL 555 and equipped with a 165-degree fusible link
- 1-1/2 hr fire rating protects duct penetrations
- 22 ga galvanized steel resists corrosion in HVAC systems
- 165 °F fusible link triggers automatic closure in fire
- 110 sq ft free area maintains airflow performance
- UL 555 listed for code-compliant installations
Product Identity
The Dayton 20CK17 is a sleeved fire damper built for square ductwork in commercial HVAC installations. It meets UL 555 and related fire-safety standards for dynamic vertical mounting.
Installation Notes
The unit ships with a factory sleeve and a 165 °F fusible link already fitted. Installers must verify that the retaining angle matches the recommended specification and that the damper seats squarely to maintain the 1-1/2 hour fire rating.
Pre-Order Checks
Confirm the duct opening matches the 6 by 6 inch nominal size and that the system operates within low-pressure limits. Ensure local codes accept UL 555, NFPA 80, 90A, 101, IBC, CSFM and NYC MEA compliance.
Highlights
- 1-1/2 hr fire rating protects duct penetrations
- 22 ga galvanized steel resists corrosion in HVAC systems
- 165 °F fusible link triggers automatic closure in fire
- 110 sq ft free area maintains airflow performance
- UL 555 listed for code-compliant installations
Specifications
| Brand | DAYTON |
|---|
Questions about this item
How do I verify the fusible link releases at 165 degrees F after installation?
The damper is equipped with a 165 Degrees F fusible link; when the rated temperature is reached the link melts and the blades close automatically, confirming operation.
What comes with the 20CK17 and what must I source separately?
The unit includes the sleeved fire damper with 22 ga. galvanized steel frame and UL 555 listing; retaining angle 2TGG4 and any duct fasteners are not included.
Which damper size matches a 6 by 6 inch duct opening?
This model has a nominal duct width and height of 6 In. with a damper width and height of 5-3/4 In., making it the correct choice for a 6x6 square duct.
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