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Dayton 35 7/8"H-W Aluminum Ceiling Truss Damper: For 30 in Fan, Single Panel, 30 3/4 in H - Ceiling/Roof-Mount Backdraft Dampers
DaytonCeiling/Roof-Mount Backdraft Dampers

Dayton 35 7/8"H-W Aluminum Ceiling Truss Damper: For 30 in Fan, Single Panel, 30 3/4 in H

The Dayton 4HA11 is a ceiling/roof-mount backdraft damper designed for horizontal mounting and horizontal airflow. This single-panel aluminum unit measures 35 7/8 inches wide by 30 3/4 inches high and is intended for…

SKU 3G-OTH-74904

Brand
Dayton
Item
35 7/8"H-W Aluminum Ceiling Truss Damper: For 30 in Fan, Single Panel, 30 3/4 in H
Category
Ceiling/Roof-Mount Backdraft Dampers
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Technical Specifications

Dayton
Manufacturer Part Number
4HA11
Type
Single Panel, 35 7/8 in W
H
30 3/4 in
Airflow Direction
Horizontal
Mounting Position
Horizontal
Maximum Air Velocity
1500 fpm
View Full Spec Sheet

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

Product Description

The Dayton 4HA11 is a ceiling/roof-mount backdraft damper designed for horizontal mounting and horizontal airflow. This single-panel aluminum unit measures 35 7/8 inches wide by 30 3/4 inches high and is intended for use with a 30-inch fan. It has a maximum air velocity of 1500 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 4HA11 ceiling truss damper used for?

The Dayton 4HA11 is a ceiling/roof-mount backdraft damper used to prevent reverse airflow in horizontal ventilation systems. It is designed for a 30-inch fan, mounts horizontally, and handles air velocities up to 1500 fpm. Typical applications include commercial exhaust and supply air systems where one-way airflow is critical.

What are the specifications of the Dayton 4HA11 damper?

The Dayton 4HA11 is a single-panel aluminum backdraft damper with a height of 30 3/4 inches and a width of 35 7/8 inches. It is designed for horizontal mounting and horizontal airflow, with a maximum air velocity of 1500 fpm. The manufacturer part number is 4HA11.

Where to buy the Dayton 4HA11 damper worldwide?

3G Electric supplies the Dayton 4HA11 ceiling truss damper to customers worldwide. As a global industrial equipment distributor established in 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and a quote for your region.

How to install the Dayton 4HA11 ceiling damper?

Install the Dayton 4HA11 damper in a horizontal duct or ceiling opening, ensuring the airflow arrow points in the intended direction. Secure the frame to the structure using appropriate fasteners. Verify the damper blades open freely and close fully under gravity. Always follow local building codes and the fan manufacturer's guidelines.

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 ceiling/roof-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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