We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

3G Electric
RFQ CartGet a QuoteSign inSign up
Dayton 39"H-W 5.75"L Alu Wall Backdraft Dampr: For 36 in Fan, Single Panel, 39 in H - Wall-Mount Backdraft Dampers
DaytonWall-Mount Backdraft Dampers

Dayton 39"H-W 5.75"L Alu Wall Backdraft Dampr: For 36 in Fan, Single Panel, 39 in H

The DAYTON 4C521 is a wall-mount backdraft damper with flat blades, designed for horizontal airflow in a vertical mounting position. It measures 39 inches in height, 39 inches in width, and 2.5 inches in depth, with…

SKU 3G-OTH-76526

Brand
Dayton
Item
39"H-W 5.75"L Alu Wall Backdraft Dampr: For 36 in Fan, Single Panel, 39 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
4C521
Type
Single Panel, 39 in W
D
2 1/2 in
H
39 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 4C521 is a wall-mount backdraft damper with flat blades, designed for horizontal airflow in a vertical mounting position. It measures 39 inches in height, 39 inches in width, and 2.5 inches in depth, with a maximum air velocity of 2500 fpm. This single-panel aluminum damper is intended for use with a 36-inch fan.

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 4C521 wall-mount backdraft damper used for?

The DAYTON 4C521 is a wall-mount backdraft damper that prevents reverse airflow in ventilation systems. It is designed for horizontal airflow with a vertical mounting position, typically used with a 36-inch fan to allow exhaust air out while blocking outside air from entering.

What are the specifications of the DAYTON 4C521 backdraft damper?

The DAYTON 4C521 is a single-panel aluminum damper measuring 39 inches high, 39 inches wide, and 2.5 inches deep. It has flat blades, a maximum air velocity of 2500 fpm, and is designed for horizontal airflow in a vertical mounting position. The manufacturer part number is 4C521.

Where to buy the DAYTON 4C521 backdraft damper worldwide?

You can source the DAYTON 4C521 backdraft damper through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time.

How to install the DAYTON 4C521 wall-mount backdraft damper?

Install the DAYTON 4C521 damper in a vertical wall opening with the airflow direction horizontal. Secure the frame to the wall structure using appropriate fasteners. Ensure the damper blades swing freely and that the mounting surface is flat to prevent binding. Always follow local building codes.

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
39"H-W 5.75"L Alu Wall Backdraft Damper: For 36 in Fan, Single Panel, 39 in H, 39 in W, 2 1/2 in D (MPN 3C310). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
Dayton
39"H-W 5.75"L Alu Wall Backdraft Damper: For 36 in Fan, Single Panel, 39 in H, 39 in W, 2 1/2 in D (MPN 3C310). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
23"H-W 5.75"L Alu Wall Backdraft Dampr: For 20 in Fan, Single Panel, 23 in H, 23 in W, 2 1/2 in D (MPN 1C745). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
Dayton
23"H-W 5.75"L Alu Wall Backdraft Dampr: For 20 in Fan, Single Panel, 23 in H, 23 in W, 2 1/2 in D (MPN 1C745). 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 Alu Wall Backdraft Dampr: For 16 in Fan, Single Panel, 19 in H, 19 in W, 2 1/2 in D (MPN 1C743). 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 Alu Wall Backdraft Dampr: For 16 in Fan, Single Panel, 19 in H, 19 in W, 2 1/2 in D (MPN 1C743). 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 Alu Wall Backdraft Dampr: For 18 in Fan, Single Panel, 21 in H, 21 in W, 2 1/2 in D (MPN 1C744). 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 Alu Wall Backdraft Dampr: For 18 in Fan, Single Panel, 21 in H, 21 in W, 2 1/2 in D (MPN 1C744). 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 Alu Wall Backdraft Dampr: For 10 in Fan, Single Panel, 13 in H, 13 in W, 2 1/2 in D (MPN 2C526). 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 Alu Wall Backdraft Dampr: For 10 in Fan, Single Panel, 13 in H, 13 in W, 2 1/2 in D (MPN 2C526). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2500 fpm; Mounting Position: Vertical.
21"H-W 6"L Aluminum Wall Backdraft Dampr: For 18 in Fan, Single Panel, 21 in H, 21 in W, 2 1/4 in D (MPN 2C521). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2000 fpm; Mounting Position: Vertical.
Dayton
21"H-W 6"L Aluminum Wall Backdraft Dampr: For 18 in Fan, Single Panel, 21 in H, 21 in W, 2 1/4 in D (MPN 2C521). Key specifications — Airflow Direction: Horizontal; Blade Type: Flat Blade; Brand: DAYTON; Maximum Air Velocity: 2000 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.