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Rectangular galvanised steel fire damper, 7.75 by 15.75 inches

Dayton

Dayton 2TGF7 Rectangular Fire Damper 7.75 x 15.75 in

SKU CH-4FN6-DMS8Q

Rectangular fire damper with galvanised steel frame, 0.6 sq ft free area and 4000 fpm max air velocity

  • Product typeDampers
  • Rectangular frame fits 7.75 x 15.75 in duct openings
  • Galvanised steel construction resists corrosion in HVAC systems
  • Rated for 4000 fpm maximum air velocity
  • 6 sq ft free area maintains airflow efficiency
  • Single-panel design simplifies installation and inspection

Dayton 2TGF7 Rectangular Fire Damper

This Dayton 2TGF7 rectangular fire damper is built for HVAC ductwork that requires a fire-rated barrier. Its galvanised steel frame and single-panel design suit commercial and industrial installations where rectangular duct profiles are specified.

Free area and velocity rating

The damper provides a free area of .6 sq ft and is rated for a maximum air velocity of 4000 fpm. These figures determine whether the unit can handle the required airflow without excessive pressure drop in the system.

Rough opening dimensions

The rough opening measures 7.75 in by 15.75 in with a frame depth of 3.7 in and 22 ga frame thickness. This exact opening size is the single specification that decides if the damper fits the duct penetration.

How it compares

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

Price $77.99
Pricier than about 82% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameDAYTON
Product typeDampers

Questions about this item

Does the 22 ga galvanized steel frame or single panel need scheduled replacement?

The 22 ga galvanized steel frame and single panel have no scheduled replacement interval; inspect per local code requirements.

What airflow limit is reached first during continuous operation at the rated 4000 fpm?

The maximum air velocity is 4000 fpm; sustained operation at that velocity is the primary airflow limit.

How much heat does the damper add to the airstream when running all day at 4000 fpm?

The damper is a passive component with no power draw; it adds negligible heat to the airstream during continuous airflow.

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