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Dayton 55.75"H-W 4.5"L Aluminum Backdraft Dampr: For 54 in Fan, For 56 in Nominal Duct Dia - Universal-Mount Backdraft Dampers
DaytonUniversal-Mount Backdraft Dampers

Dayton 55.75"H-W 4.5"L Aluminum Backdraft Dampr: For 54 in Fan, For 56 in Nominal Duct Dia

The Dayton 5NKN7 is a universal-mount backdraft damper with a 55.75-inch height by 4.5-inch length aluminum construction, designed for use with a 54-inch fan and a 56-inch nominal duct diameter. It features flat…

SKU 3G-OTH-74318

Brand
Dayton
Item
55.75"H-W 4.5"L Aluminum Backdraft Dampr: For 54 in Fan, For 56 in Nominal Duct Dia
Category
Universal-Mount Backdraft Dampers
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Technical Specifications

Dayton
Manufacturer Part Number
5NKN7
Type
For 56 in Nominal Duct Dia, Double Panel
Blade Type
Flat Blade
Airflow Direction
Vertical
Mounting Position
Horizontal
Maximum Air Velocity
2000 fpm
View Full Spec Sheet

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

Product Description

The Dayton 5NKN7 is a universal-mount backdraft damper with a 55.75-inch height by 4.5-inch length aluminum construction, designed for use with a 54-inch fan and a 56-inch nominal duct diameter. It features flat blades, supports vertical airflow direction, and is mounted horizontally. The damper has a maximum air velocity of 2000 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 5NKN7 backdraft damper used for?

The Dayton 5NKN7 is a universal-mount backdraft damper used to prevent reverse airflow in ventilation systems. It is designed for a 54-inch fan with a 56-inch nominal duct diameter, supporting vertical airflow when mounted horizontally in commercial or industrial exhaust applications.

What are the specifications of the Dayton 5NKN7 damper?

The Dayton 5NKN7 is a double-panel aluminum backdraft damper with flat blades, 55.75 inches high and 4.5 inches long. It handles a maximum air velocity of 2000 fpm, supports vertical airflow direction, and is mounted horizontally. It fits a 54-inch fan and 56-inch nominal duct diameter.

Where to buy the Dayton 5NKN7 backdraft damper worldwide?

You can source the Dayton 5NKN7 backdraft damper through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this universal-mount damper.

How to install the Dayton 5NKN7 backdraft damper?

Install the Dayton 5NKN7 damper in a horizontal mounting position with the airflow direction set to vertical. Ensure the 56-inch nominal duct diameter aligns with the fan opening. Secure the aluminum frame using appropriate fasteners and verify that the flat blades move freely to prevent backdraft.

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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