Dayton
Dayton 3HGL5 Round Fire/Smoke Damper 8 in 350°F 120V AC
Round fire/smoke damper with galvanised steel blade, 7.9 in diameter for 8 in duct, 120V AC actuator rated to 350°F
- TypeClass II Leakage
- Galvanized steel frame resists corrosion in ductwork
- Dynamic damper rated for 350 °F fire protection
- Class II leakage rating limits smoke spread
- 120 V AC actuator powers automatic operation
- Fits 8 in nominal round duct with 7.9 in diameter
Dayton 3HGL5 Round Fire/Smoke Damper
The Dayton 3HGL5 is a round fire and smoke damper built from galvanized steel for eight-inch nominal ductwork. It carries a 350-degree Fahrenheit temperature rating and operates on 120-volt AC power for dynamic closure in HVAC systems.
Suited for commercial fire and smoke control
This damper suits contractors installing fire-rated barriers in round duct runs where a single-blade, Class II leakage assembly is specified. Projects that require rectangular housings, higher pressure classes, or a different voltage supply will need alternative equipment.
350°F temperature rating decides fit
The 350-degree Fahrenheit nameplate temperature is the critical specification that determines whether this damper meets the fire-protection engineering schedule for a given compartment.
Highlights
- Galvanized steel frame resists corrosion in ductwork
- Dynamic damper rated for 350 °F fire protection
- Class II leakage rating limits smoke spread
- 120 V AC actuator powers automatic operation
- Fits 8 in nominal round duct with 7.9 in diameter
Specifications
| Brand | DAYTON |
|---|---|
| Type | Class II Leakage |
Questions about this item
How do I verify the 350°F fire rating is functioning after installation?
Confirm the fusible link releases at 350°F and the single galvanized steel blade closes fully against the 20-gauge frame within the 4 in wg pressure limit.
What components are included and what must be purchased separately?
The damper ships as a complete 7.9 in diameter round unit with 120V AC actuator; mounting hardware, duct connectors and control wiring are not included.
Which capacity suits a system needing 3000 fpm maximum velocity?
The 8 in nominal duct size rated for 3000 fpm and 4 in wg static pressure matches that requirement; no other size or voltage variants are offered.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
