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CANARM Manual Damper: For 20 in Fan, For 20 in Nominal Duct Dia, 4, 20 in H, 20 in W - Wall-Mount Backdraft Dampers
CANARMWall-Mount Backdraft Dampers

CANARM Manual Damper: For 20 in Fan, For 20 in Nominal Duct Dia, 4, 20 in H, 20 in W

The CANARM Manual Damper (SKU 844HZ2, MPN SR3220X20) is a wall-mount backdraft damper designed for a 20-inch fan and 20-inch nominal duct diameter. It features flat blades with horizontal airflow direction, measures…

SKU 3G-OTH-75356

Brand
CANARM
Item
Manual Damper: For 20 in Fan, For 20 in Nominal Duct Dia, 4, 20 in H, 20 in W
Category
Wall-Mount Backdraft Dampers
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Technical Specifications

CANARM
Manufacturer Part Number
SR3220X20
Type
For 20 in Nominal Duct Dia, 4, 20 in W, Aluminum
D
2 1/4 in
H
20 in
Blade Type
Flat Blade
Airflow Direction
Horizontal
View Full Spec Sheet

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

Product Description

The CANARM Manual Damper (SKU 844HZ2, MPN SR3220X20) is a wall-mount backdraft damper designed for a 20-inch fan and 20-inch nominal duct diameter. It features flat blades with horizontal airflow direction, measures 20 inches in height, 20 inches in width, and 2 1/4 inches in depth, and is constructed from aluminum.

Frequently Asked Questions

What is the CANARM manual damper used for?

The CANARM manual damper (MPN SR3220X20) is a wall-mount backdraft damper used to control airflow in industrial ventilation systems. It prevents reverse airflow when the fan is off, making it suitable for exhaust or intake applications in commercial buildings, warehouses, and manufacturing facilities.

What are the specifications of the CANARM manual damper?

The CANARM manual damper is designed for a 20-inch fan and 20-inch nominal duct diameter. It has flat blades, horizontal airflow direction, and measures 20 inches high by 20 inches wide by 2 1/4 inches deep. The construction material is aluminum, and the manufacturer part number is SR3220X20.

Where to buy the CANARM manual damper worldwide?

3G Electric supplies the CANARM manual damper (SKU 844HZ2) to customers worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this damper to any country.

How to install a CANARM manual damper?

Install the CANARM manual damper in a horizontal duct run with the airflow arrow pointing away from the fan. Secure it to the duct using sheet metal screws or flanges, ensuring the damper blade moves freely. For wall-mount applications, seal the perimeter with mastic or foil tape to prevent air leaks.

Used in

Common applications for CANARM
Warehouse ventilation — CANARM direct-drive panel exhaust fans (e.g., P24-1RS9M115) for removing heat and fumes
Manufacturing plant air circulation — CANARM belt-drive blowers (e.g., BI2731000M) for high-volume air movement
Commercial kitchen exhaust — CANARM downblast exhausters (e.g., ALX165-DD033EC) for roof-mounted ventilation
Industrial floor cooling — CANARM mobile circulating fans (e.g., HVR36) for spot cooling in workshops
Office or retail space ventilation — CANARM wall-mount oscillating fans (e.g., CA30OSC-C) for general air circulation
Equipment cooling — CANARM ceiling-mount fans (e.g., HAF18-ZO) for targeted airflow over machinery

CANARM Products

3G Electric supplies CANARM wall-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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