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Square galvanized steel fire smoke damper 16 inches wide

Dayton

Dayton 3HGK3 Square Fire/Smoke Damper 16 in W

SKU CH-M2Q9-P7XNJ

A 16-inch square galvanized-steel fire and smoke damper rated for 2000 fpm air velocity and 120V AC operation

  • Product typeClass II Leakage
  • Galvanised steel frame resists corrosion in ductwork
  • Class II leakage rating limits air loss to 4 in wg
  • Dynamic damper operates at velocities up to 2000 fpm
  • Single-panel square design fits 16 in rough opening
  • 120 V AC actuator provides reliable fire and smoke control

16-Inch Square Fire/Smoke Damper

The Dayton 3HGK3 is a Class II leakage fire and smoke damper built from galvanised steel for square ductwork. It measures 15.75 inches high by 16 inches wide and long with a 16-gauge frame. The unit carries a 120V AC nameplate rating and suits dynamic HVAC systems.

Install in a 16-Inch Rough Opening

The damper fits a square rough opening of 16 inches and uses a single-panel blade design. Installers must verify the maximum air pressure of 4 in wg and maximum air velocity of 2000 fpm match the system design. Incorrect sizing or exceeding these limits are the most common installation issues.

For Commercial Fire and Smoke Control

This damper suits engineers specifying fire and smoke protection in square galvanised duct systems rated for 120V AC actuation. It is not for buyers needing round or rectangular duct connections, higher pressure classes, or different voltage control signals.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $419.99
Pricier than about 91% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameDAYTON
Product typeClass II Leakage

Questions about this item

How do I confirm the damper is operating correctly after installation?

Check that the blade moves freely and seals tight when the 120V AC actuator is energised; airflow should not exceed 2000 fpm and static pressure must stay within 4 in wg.

What comes in the box and what must I source separately?

The damper frame and galvanised steel blade are supplied; you will need to provide mounting hardware, duct connectors and the 120V AC control wiring.

Which size should I select for a 16-inch square duct?

Choose the 16 in W × 15.75 in H model; it matches a 16-inch square rough opening and is rated for Class II leakage at the stated pressure and velocity limits.

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