Louvers and Dampers in North and South Carolina

Hahn Mason Air Systems is proud to be an integral part of the North and South Carolina building construction and mechanical equipment industry for over 50 years, serving you from our local offices and warehouse locations in Charlotte and Charleston. We represent one of the finest louver and damper manufacturers in United Enertech and are proud to offer their technology to your next project.

It is our goal to meet the quality needs of our customers and maintain the flexibility to adapt custom specifications as requested.


We offer numerous models of louvers and dampers


  • Acoustical Louvers
  • Adjustable Louvers
  • Blast LouversBrick & Flood Vents
  • Combination Louver/DamperDade
  • County Hurricane Louvers
  • Equipment Screens
  • FEMA 361 Louver/Grille
  • Fixed Louvers
  • PTAC Grilles
  • Wind-Driven Rain Louvers

Project Details to Determine/Questions to ask Hahn Mason.

  1. The Design and Applications goals
  2. Specify Performance Criteria and Certification Requirements
  3. Key Project Variables:
    a. Aesthetic Requirements
    b. Wall Type and Depth
    c. Acceptable Pressure Loss
    d. Water Penetration Criteria

4. Design Intent Louver Model
5. Acceptable Air Velocity
6. Require Louver Free Area


United Enertech offers the industry’s broadest rand of Dampers on a commercial and industrial level. UE has a wide catalog and variety of dampers according to the needs of each market.

  • Backdraft Dampers
  • Blast Dampers
  • Rectangular Dampers
  • Rectangular Industrial Dampers
  • Round Dampers
  • Round Industrial Dampers
  • Small Motorized Rectangular Dampers
  • Small Motorized Round Dampers




Project Details to Determine / Questions to ask Hahn Mason.

  • Commercial or Industrial

    • Commercial: Low Pressure / Low Velocity
    • Commercial: Medium Pressure / Medium Velocity
    • Industrial: High Pressure / High Velocity
  • Material

    • Galvanized Steel
    • Extruded Aluminum
    • Stainless Steel
  • Manual Balancing (For Balancing the Air Flow in lieu of Tight Shut off)

    • Round
    • Rectangular
  • Control

    • Leakage Rate
      • Class 1A (Lowest Leaking)
      • Class 1
      • Class 2
  • Operation

    • Manual Hand Quad
    • Electric Actuator
      • 24V (open or close)
      • 120V (open or close)
      • 230V (open or close)
      • 24V with Digital Input for Modulation
    • Pneumatic Actuator
  • Life Safety Dampers

    • Fire
    • Smoke
    • Combination Fire Smoke
    • Ceiling Radiation