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Dayton

Dayton 20CK18 Sleeved Fire Damper Square 8x8 165F

SKU CH-GXPE-Q4VK0

Square fire damper with sleeve fits 8-inch ducts, galvanised steel construction, 165 °F fusible link and 1½-hour fire rating

  • 1-1/2 hour fire rating protects duct penetrations
  • 165 °F fusible link triggers automatic closure
  • 22-gauge galvanized steel resists corrosion and heat
  • 241 sq ft free area maintains airflow efficiency
  • UL 555, NFPA 80/90A/101, IBC, CSFM, NYC MEA compliance

Application and Audience

The Dayton 20CK18 is a sleeved fire damper designed for low-pressure HVAC systems. It serves contractors and facility managers who need a square damper with a 165-degree F fusible link and a one-and-a-half-hour fire rating.

Build Integration

The unit fits an 8-inch by 8-inch nominal duct opening and provides a free area of 0.241 square feet. Its 22-gauge galvanized steel construction suits vertical dynamic mounting, while the sleeve simplifies connection to the surrounding ductwork.

Bundled Components

A recommended retaining angle is specified separately to complete the installation. The damper meets UL 555, NFPA 80, 90A and 101, IBC, CSFM and NYC MEA standards for code compliance.

Highlights

  • 1-1/2 hour fire rating protects duct penetrations
  • 165 °F fusible link triggers automatic closure
  • 22-gauge galvanized steel resists corrosion and heat
  • 241 sq ft free area maintains airflow efficiency
  • UL 555, NFPA 80/90A/101, IBC, CSFM, NYC MEA compliance

Specifications

BrandDAYTON

Questions about this item

How long does the 165 F fusible link hold before releasing during a fire?

The link is rated for a 1-1/2 hour fire resistance period under UL 555 testing.

What surface temperature should I expect on the 22 ga. galvanized steel sleeve after continuous airflow?

The damper is designed for low-pressure HVAC systems and the steel sleeve remains at near-ambient temperature during normal operation.

Which retaining angle is required to mount this 8 x 8 square damper in a fire-rated barrier?

The manufacturer recommends the 2TGG5 retaining angle for proper installation.

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