Backdraft Damper Vert/Horiz Mtg 27 3/4Sq MPN:3HHL7

This model is a non-flanged exhaust backdraft damper. The blades have a felt seal on the leading edge for quiet closing and better protection from the weather. 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.

Technical Specifications

• Item Backdraft Exhaust Damper
• Type No Flange, Horizontal or Vertical Mount
• Damper Size (In.) 27-3/4 x 27-3/4
• Overall Size (In.) 27-3/4 x 27-3/4
• 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: 3HHL7
• MPN: 3HHL7

Label Details

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

Classification Details

• Harmonization Code: 7308909590
• 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