Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

Dayton 57"H-W 5.75"L Aluminum Backdraft Damper: For 54 in Fan, Double Panel, 57 in H - Wall-Mount Backdraft Dampers
DaytonWall-Mount Backdraft Dampers

Dayton 57"H-W 5.75"L Aluminum Backdraft Damper: For 54 in Fan, Double Panel, 57 in H

The Dayton 57"H-W 5.75"L Aluminum Backdraft Damper (SKU 45C668) is a wall-mount backdraft damper designed for use with a 54-inch fan. It features flat blades, horizontal airflow direction, and a vertical mounting…

SKU 3G-OTH-77199

Brand
Dayton
Item
57"H-W 5.75"L Aluminum Backdraft Damper: For 54 in Fan, Double Panel, 57 in H
Category
Wall-Mount Backdraft Dampers
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

Dayton
Manufacturer Part Number
45C668
Type
Double Panel, 57 in W
D
2 1/4 in
H
57 in
Blade Type
Flat Blade
Airflow Direction
Horizontal
Mounting Position
Vertical
Maximum Air Velocity
2500 fpm
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The Dayton 57"H-W 5.75"L Aluminum Backdraft Damper (SKU 45C668) is a wall-mount backdraft damper designed for use with a 54-inch fan. It features flat blades, horizontal airflow direction, and a vertical mounting position, with a maximum air velocity of 2500 fpm. This double-panel damper measures 57 inches in height, 57 inches in width, and 2 1/4 inches in depth.

Frequently Asked Questions

What is the Dayton 45C668 backdraft damper used for?

The Dayton 45C668 backdraft damper is used to prevent reverse airflow in ventilation systems, typically mounted on a wall with a 54-inch fan. It allows air to flow horizontally while closing automatically when the fan stops, maintaining system efficiency and preventing contamination.

What are the specifications of the Dayton 45C668 backdraft damper?

The Dayton 45C668 is a double-panel aluminum backdraft damper measuring 57 inches high by 57 inches wide by 2 1/4 inches deep. It has flat blades, horizontal airflow direction, vertical mounting position, and a maximum air velocity of 2500 fpm. It is designed for use with a 54-inch fan.

Where to buy the Dayton 45C668 backdraft damper worldwide?

3G Electric supplies the Dayton 45C668 backdraft damper to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this item.

How to install a Dayton backdraft damper?

Install the Dayton backdraft damper in a vertical wall opening with the airflow direction horizontal. Ensure the damper frame is securely mounted and sealed to prevent air leaks. The blades should open freely with fan operation and close by gravity when the fan stops. Follow standard HVAC installation practices.

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 wall-mount backdraft dampers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Similar products

Matched by specification & description
57"H-W 6 1/4"L Extrd Alu Backdraft Dampr: For 54 in Fan, Double Panel, 57 in H, 57 in W, 3 in D (MPN 45C662). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 3000 fpm; Mounting Position: Vertical.
Dayton
57"H-W 6 1/4"L Extrd Alu Backdraft Dampr: For 54 in Fan, Double Panel, 57 in H, 57 in W, 3 in D (MPN 45C662). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 3000 fpm; Mounting Position: Vertical.
63"H-W 6 1/4"L Extrd Alu Backdraft Dampr: For 60 in Fan, Double Panel, 63 in H, 63 in W, 3 in D (MPN 45C663). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 3000 fpm; Mounting Position: Vertical.
Dayton
63"H-W 6 1/4"L Extrd Alu Backdraft Dampr: For 60 in Fan, Double Panel, 63 in H, 63 in W, 3 in D (MPN 45C663). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 3000 fpm; Mounting Position: Vertical.
54"H-W 5.75"L Aluminum Exhaust Shutter: For 48 in Fan, Double Panel, 54 in H, 54 in W, 2 1/4 in D (MPN 45C667). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
Dayton
54"H-W 5.75"L Aluminum Exhaust Shutter: For 48 in Fan, Double Panel, 54 in H, 54 in W, 2 1/4 in D (MPN 45C667). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
57"H-W 6 1/4"L Aluminum Backdraft Damper: For 54 in Fan, Double Panel, 57 in H, 57 in W, 3 in D (MPN 3C313). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
Dayton
57"H-W 6 1/4"L Aluminum Backdraft Damper: For 54 in Fan, Double Panel, 57 in H, 57 in W, 3 in D (MPN 3C313). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
19"H-W 5.75"L Aluminum Backdraft Damper: For 16 in Fan, Single Panel, 19 in H, 19 in W, 2 1/2 in D (MPN 4C557). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
Dayton
19"H-W 5.75"L Aluminum Backdraft Damper: For 16 in Fan, Single Panel, 19 in H, 19 in W, 2 1/2 in D (MPN 4C557). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
21"H-W 5.75"L Aluminum Backdraft Damper: For 18 in Fan, Single Panel, 21 in H, 21 in W, 2 1/2 in D (MPN 4C558). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
Dayton
21"H-W 5.75"L Aluminum Backdraft Damper: For 18 in Fan, Single Panel, 21 in H, 21 in W, 2 1/2 in D (MPN 4C558). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.

More from Dayton

View all Dayton parts
19"H-W 6.5"L Fiberglass Backdraft Damper: For 16 in Fan, Single Panel, 19 in H, 19 in W, 3 in D (MPN 5C212). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
Dayton
19"H-W 6.5"L Fiberglass Backdraft Damper: For 16 in Fan, Single Panel, 19 in H, 19 in W, 3 in D (MPN 5C212). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
15"H-W 6.5"L Extrd Alu Backdraft Dampr: For 12 in Fan, Single Panel, 15 in H, 15 in W, 3 in D, Wall (MPN 4FZH3). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 3250 fpm; Mounting Position: Vertical.
Dayton
15"H-W 6.5"L Extrd Alu Backdraft Dampr: For 12 in Fan, Single Panel, 15 in H, 15 in W, 3 in D, Wall (MPN 4FZH3). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 3250 fpm; Mounting Position: Vertical.
45"H-W 5.75"L Aluminum Backdraft Damper: For 42 in Fan, Double Panel, 45 in H, 45 in W, 3 in D, Wall (MPN 3C311). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
Dayton
45"H-W 5.75"L Aluminum Backdraft Damper: For 42 in Fan, Double Panel, 45 in H, 45 in W, 3 in D, Wall (MPN 3C311). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
63"H-W 6 1/4"L Aluminum Backdraft Damper: For 60 in Fan, Double Panel, 63 in H, 63 in W, 3 in D (MPN 3HHP2). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
Dayton
63"H-W 6 1/4"L Aluminum Backdraft Damper: For 60 in Fan, Double Panel, 63 in H, 63 in W, 3 in D (MPN 3HHP2). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
25"H-W 5.75"L Aluminum Wall Fan Shutter: For 20 in Fan, Single Panel, 25 in H, 25 in W, 3 in D, Wall (MPN 53DR17). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
Dayton
25"H-W 5.75"L Aluminum Wall Fan Shutter: For 20 in Fan, Single Panel, 25 in H, 25 in W, 3 in D, Wall (MPN 53DR17). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
27"H-W 5 1/4"L SS Backdraft Dampr: For 24 in Fan, Double Panel, 27 in H, 27 in W, 2 in D, Horizontal (MPN 4FZJ8). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
Dayton
27"H-W 5 1/4"L SS Backdraft Dampr: For 24 in Fan, Double Panel, 27 in H, 27 in W, 2 in D, Horizontal (MPN 4FZJ8). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
13"H-W 5.75"L Aluminum Backdraft Damper: For 10 in Fan, Single Panel, 13 in H, 13 in W, 2 1/2 in D (MPN 4C555). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
Dayton
13"H-W 5.75"L Aluminum Backdraft Damper: For 10 in Fan, Single Panel, 13 in H, 13 in W, 2 1/2 in D (MPN 4C555). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
19"H-W 6.5"L Extrd Alu Backdraft Dampr: For 16 in Fan, Single Panel, 19 in H, 19 in W, 3 in D, Wall (MPN 4FZH4). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 3250 fpm; Mounting Position: Vertical.
Dayton
19"H-W 6.5"L Extrd Alu Backdraft Dampr: For 16 in Fan, Single Panel, 19 in H, 19 in W, 3 in D, Wall (MPN 4FZH4). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 3250 fpm; Mounting Position: Vertical.