Backdraft Damper Horizontal 33-3/4Sq MPN:3HHL9
Introducing Dayton's Backdraft Damper Horizontal 33-3/4Sq - a perfect solution for airflow management in various HVAC and refrigeration systems. This non-flanged exhaust backdraft damper is designed to provide efficient and reliable performance with its spring-assisted blades that open quickly. Its felt seal on the leading edge ensures quiet closing while offering protection against weather elements. With a damper size of 33-3/4 x 33-3/4 and overall size of 33 3/4 x 33 3/4, it fits into roof curbs, duct work, or wall collars perfectly. Its maximum velocity of 2000 FPM ensures efficient airflow management for your applications. Ideal for use with fans or power roof ventilators, the Backdraft Damper Horizontal offers exceptional performance and reliability for your HVAC and refrigeration needs.
Top product features:
- Spring assisted blades for quick opening and closing
- Felt seal on the leading edge for quiet closing and protection from the weather
- Non-flanged design for easy installation in various HVAC and refrigeration applications
Top product applications:
- HVAC systems in commercial and residential buildings to regulate airflow and temperature
- Industrial ventilation systems to control smoke, dust, or fumes
- Exhaust systems for kitchens, bathrooms, or laundry rooms to remove moisture or odors
Technical Specifications
- Item Backdraft Exhaust Damper
- Type No Flange, Horizontal Mount
- Damper Size (In.) 33-3/4 x 33-3/4
- Overall Size (In.) 33 3/4 x 33 3/4
- Max. Velocity (FPM) 2,000
- Construction Material G-90 Galvanized Steel Frame and Aluminum Blades
- Includes Pre-punched Conduit Hole Knock-out and Felted Edges For Quiet Operation
Manufacturer Details
- Manufacturer: Dayton
- Condensed Mfg Number: 3HHL9
- MPN: 3HHL9
Label Details
- Hazardous Material: N
- Green Material Flag: N
- Country of Origin: US
- CA Prop 65 Wht Label: N
Classification Details
- Harmonization Code: 8414901080
- GDS Category Name: Backdraft Roof Dampers
- GDS Family Name: Ventilation Equipment and Supplies
- GDS Segment Name: HVAC and Refrigeration
- UNSPSC: 40101504
- UNSPSC Class ID: 15
- UNSPSC Commodity Name: Ventilation
- UNSPSC Commodity ID: 04
- UNSPSC Commodity Name: Ventilation dampers
- UNSPSC Family ID: 10
- UNSPSC Family Name: Heating and ventilation and air circulation
- UNSPSC Segment ID: 40
- UNSPSC Segment Name: Distribution and Conditioning Systems and Equipment and Components
Shipping Details
- Not For Sale In: HI AK PR