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Square galvanised steel fire damper with sleeve, 8 by 8 inches

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.

How it compares

Measured against everything we stock in Heating & Cooling Controllers, at today’s prices. Recalculated every night.

Price $88.99
Pricier than about 66% of the 1,762 comparable items (median $45.99).

Specifications

Product
Brand nameDAYTON

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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