Dayton 33.75"H-W 4.5"L Aluminum Backdraft Dampr: For 34 in Fan, For 34 in Nominal Duct Dia
The Dayton 33.75"H-W 4.5"L Aluminum Backdraft Damper (SKU 3G-OTH-74643) is a universal-mount backdraft damper designed for a 34-inch fan and 34-inch nominal duct diameter. It features a flat blade type, supports…
SKU 3G-OTH-74643
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
Need installation or engineering help?
Ask a question
Product Description
The Dayton 33.75"H-W 4.5"L Aluminum Backdraft Damper (SKU 3G-OTH-74643) is a universal-mount backdraft damper designed for a 34-inch fan and 34-inch nominal duct diameter. It features a flat blade type, supports vertical airflow direction, and is intended for vertical mounting positions. The damper has a maximum air velocity of 2250 fpm.
Frequently Asked Questions
What is the Dayton backdraft damper used for?
The Dayton backdraft damper prevents reverse airflow in vertical exhaust or intake ducts. It is designed for a 34-inch fan and 34-inch nominal duct diameter, with a flat blade that opens under forward airflow and closes when flow stops, protecting equipment and maintaining system efficiency.
What are the specifications of the Dayton backdraft damper?
The Dayton is a single-panel aluminum backdraft damper with a flat blade. It measures 33.75 inches high by 4.5 inches long, fits 34-inch nominal duct diameter, supports vertical airflow direction, mounts vertically, and handles a maximum air velocity of 2250 fpm.
Where to buy the Dayton backdraft damper worldwide?
3G Electric supplies the Dayton 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 and other Dayton ventilation products.
How to install a Dayton backdraft damper for a 34-inch fan?
Mount the Dayton damper vertically in the duct, ensuring the airflow arrow points in the intended direction. Secure it with appropriate fasteners and seal the flange to prevent leakage. Verify the damper blade swings freely before system startup. Follow local codes and the fan manufacturer's guidelines.
Used in
Common applications for DaytonDayton 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.
