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Dayton 47.75"H-W 4.5"L Aluminum Backdraft Dampr: For 48 in Fan, For 48 in Nominal Duct Dia - Universal-Mount Backdraft Dampers
DaytonUniversal-Mount Backdraft Dampers

Dayton 47.75"H-W 4.5"L Aluminum Backdraft Dampr: For 48 in Fan, For 48 in Nominal Duct Dia

The Dayton 3HHN3 is a universal-mount backdraft damper designed for use with a 48-inch fan and 48-inch nominal duct diameter. It features a single-panel, flat blade construction with aluminum material, supporting…

SKU 3G-OTH-74781

Brand
Dayton
Item
47.75"H-W 4.5"L Aluminum Backdraft Dampr: For 48 in Fan, For 48 in Nominal Duct Dia
Category
Universal-Mount Backdraft Dampers
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Technical Specifications

Dayton
Manufacturer Part Number
3HHN3
Type
For 48 in Nominal Duct Dia, Single Panel
Blade Type
Flat Blade
Airflow Direction
Vertical
Mounting Position
Horizontal
Maximum Air Velocity
2250 fpm
View Full Spec Sheet

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Dayton Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Dayton 3HHN3 is a universal-mount backdraft damper designed for use with a 48-inch fan and 48-inch nominal duct diameter. It features a single-panel, flat blade construction with aluminum material, supporting vertical airflow direction and horizontal mounting. The damper has a maximum air velocity of 2250 fpm.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the Dayton 3HHN3 backdraft damper used for?

The Dayton 3HHN3 backdraft damper prevents reverse airflow in ventilation systems. It is designed for a 48-inch fan and 48-inch nominal duct diameter, with vertical airflow direction and horizontal mounting. Common in industrial exhaust and supply air applications.

What are the specifications of the Dayton 3HHN3 damper?

The Dayton 3HHN3 is a single-panel, flat blade backdraft damper made of aluminum. It supports vertical airflow, mounts horizontally, and handles a maximum air velocity of 2250 fpm. It fits 48-inch nominal duct diameter and is compatible with 48-inch fans.

Where to buy the Dayton 3HHN3 backdraft damper worldwide?

3G Electric supplies the Dayton 3HHN3 backdraft damper to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this universal-mount damper for 48-inch ducts.

How to install the Dayton 3HHN3 backdraft damper?

Install the Dayton 3HHN3 damper horizontally in the ductwork, ensuring the airflow direction arrow points upward for vertical flow. Secure the damper frame to the duct flange using appropriate fasteners. Verify the blades move freely before system startup.

Used in

Common applications for Dayton
HVAC ventilation — DAYTON centrifugal upblast roof exhaust fans (SKU 7M7U3) for kitchen exhaust systems
Mechanical power transmission — DAYTON HTD timing pulleys (SKU 404GV0) for conveyor belt drives
Process water handling — DAYTON self-priming centrifugal pumps (SKU 2ZXT4) for dewatering or transfer
Roofing and building services — DAYTON fixed ventilated roof curbs (SKU 4HX59) for filtered supply fan installations
Material handling — DAYTON latch assemblies (SKU 2KEN4) for electric chain hoist hook safety
Industrial air movement — DAYTON downblast roof exhaust fans (SKU 3HFL9) for clean air exhaust in manufacturing plants

Dayton Products

3G Electric supplies Dayton universal-mount backdraft dampers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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