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SD 10' inch Belimo 3 Wire Motorized 24v Round Zone Control Damper -Normally Same Day Shipping

Free shipping on orders over $29.99

$172.33

$ 74 .99 $74.99

In Stock
  • Power Open/Power Close: Features the powerful Belimo LM24-3-T 3-wire motor, capable of delivering 45 in-lb of torque, ensuring reliable operation in demanding commercial environments.
  • Energy Efficient: With just 2 VA of power consumption for opening and closing cycles, this damper is incredibly efficient—using up to 75% less power than traditional spring-return dampers.
  • Works with All Zone Control Systems: Operates on 24V AC and is compatible with virtually all zone control systems and thermostats, regardless of the brand.
  • Precision Airflow Control: The motor allows for fine-tuned adjustments for precise control over airflow. It can be modulated, and the damper blade remains stationary when de-powered.
  • Heavy Duty Construction: Made with heavy-duty galvanized metal and equipped with bronze bushings (not plastic), this damper is built to last in commercial environments.
  • Belimo LM24-3-T Brushless 3 wire Power Open/Power Close Motor is extremely efficient: one 40va 24volt AC damper powers 20 or more dampers
  • Zero Leakage: The damper features full duct-rated blade seals, minimizing leakage to almost 0%, ensuring optimal airflow and energy efficiency.
  • Efficient Motor Design: The Belimo LM24-3-T brushless motor is extremely efficient, able to power up to 20 dampers with a single 40VA 24V AC power supply.
  • Durable and Secure: Reinforcing beads add extra strength to the metal can, while bolted-on blades ensure durability and secure operation.
  • Easy Manual Operation: The motor includes a de-clutch button for easy rotation of the damper blade, making it convenient for testing and maintenance.


The 10" RetroZone Super Duty Round Damper is a premium commercial-grade solution designed to provide exceptional air control while remaining highly energy-efficient. Engineered with top-quality components like the Belimo LM24-3-T Power Open/Power Close motor, this damper delivers twice the torque of comparable models, yet consumes significantly less power than traditional spring-return dampers. Perfect for both residential and commercial applications, it’s the ideal choice for HVAC systems that demand precision, durability, and energy efficiency. Product Specifications: -Motor: Belimo LM24-3-T, 3-wire Power Open/Power Close -Voltage: 24V AC -Power Consumption: 2 VA for 90 seconds during opening and closing -Material: Heavy-duty galvanized metal -Seals: Durozone commercial 1/2” drive hardware, full duct-rated blade seals -Torque: 45 in-lb -Warranty: 5-year warranty -Compatible Systems: Works with almost all zone control systems and thermostats -Blades: Bolted-on for durability -Motor Features: Reversing switch, de-clutch button for easy blade rotation Customer Support: Have questions or need assistance? Contact us for expert help. At RetroZone, dampers and zoning systems are our specialty. Our team is ready to assist you with installation, troubleshooting, and any other needs.


Steve D
Reviewed in the United States on March 28, 2018
Perfect replacement for my existing Honeywell power-close damper that got stuck.
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