Dayton
Dayton 20CK19 Sleeved Fire Damper Square Steel 10x10
Square steel fire damper with sleeve, 10 by 10 inches, 1-1/2 hour rating, 165°F fusible link
- Fire-rated protection for 1-1/2 hours backed by UL 555 and NFPA standards
- Dynamic vertical mounting fits low-pressure HVAC systems with 10-inch duct dimensions
- 22-gauge galvanized steel construction provides durable corrosion-resistant performance
- Fusible link activates at 165 degrees F for reliable automatic closure
- Free area of .422 sq ft maintains airflow efficiency while meeting code
10-Inch Square Fire Damper
The Dayton 20CK19 is a UL 555 listed fire damper with an integral sleeve for square ductwork. It provides a 1-1/2 hour fire rating and uses a 165 degree fusible link. The assembly is built from 22 gauge galvanized steel for low pressure HVAC systems. It meets NFPA 80, 90A and 101 requirements.
Check Duct and Mounting Orientation
Verify the nominal duct width and height are both 10 inches to match the damper frame. The unit is rated for dynamic vertical mounting only and requires a low pressure system rating. Confirm the 3-11/16 inch damper depth fits the available sleeve penetration space. Ensure the retaining angle 2TGG7 is specified for installation.
Sleeve and Fusible Link Simplify Installation
The factory mounted sleeve eliminates field fabrication of a separate duct transition. The 165 degree fusible link is pre-installed so no separate thermal device selection is needed. Free area of 0.422 square feet is established for airflow calculations. Compliance with IBC and CSFM standards is documented for code submittals.
Highlights
- Fire-rated protection for 1-1/2 hours backed by UL 555 and NFPA standards
- Dynamic vertical mounting fits low-pressure HVAC systems with 10-inch duct dimensions
- 22-gauge galvanized steel construction provides durable corrosion-resistant performance
- Fusible link activates at 165 degrees F for reliable automatic closure
- Free area of .422 sq ft maintains airflow efficiency while meeting code
Specifications
| Brand | DAYTON |
|---|
Questions about this item
What comes with the 20CK19 fire damper and what must I supply?
The unit ships as a complete 10 by 10 inch square damper with its 22 ga. galvanized steel sleeve and a 165 °F fusible link already installed. You will need to provide the 2TGG7 retaining angles and any duct fasteners required by your installation.
The catalog lists only the 10 x 10 size for the 20CK19; how do I know it is the right one?
Choose this model when the duct opening is 10 inches wide by 10 inches high; the damper itself measures 9-3/4 by 9-3/4 inches and the sleeve depth is 3-11/16 inches, so verify those dimensions against your ductwork before ordering.
What does the 1-1/2 hour fire rating mean once the damper is in the duct?
In a fire the 165 °F fusible link releases, the blades close, and the assembly maintains integrity for 90 minutes per UL 555, NFPA 80, 90A, 101, IBC, CSFM and NYC MEA, providing a free area of 0.422 sq. ft. when open.
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