Damper Backdraft MPN:4HX33

This model is a non-flanged horizontal mount exhaust backdraft damper. The blades have a felt seal on the leading edge for better protection from the weather, and are spring assisted to allow blades to open quickly. Ideal for use in roof curbs, duct work, or wall collars when using a fan or power roof ventilator. Recommended for horizontal mount exhaust applications but it is also available for vertical mount.

Technical Specifications

• Item Backdraft Damper
• Type Wall Mount, Supply
• Damper Size (In.) 11 x 11
• Overall Size (In.) 13-3/4 x 13-3/4
• Flange Width (In.) 1 3/8 in
• Max. Velocity (FPM) 2,000
• Construction Material 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware
• Use w/Dayton Ventilators 4HZ42, 4HZ43
• Includes Felted Edges For Quiet Operation

Manufacturer Details

• Manufacturer: Dayton
• Condensed Mfg Number: 4HX33
• MPN: 4HX33

Label Details

• Hazardous Material: N
• Green Material Flag: N
• Country of Origin: US
• CA Prop 65 Wht Label: N

Classification Details

• Harmonization Code: 7610900080
• 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