The RetroZone™ SD 10" Super Duty Round Damper is a commercial-grade damper designed for high performance and long-lasting reliability, all at a price point comparable to residential dampers. Manufactured by RetroZone Inc™, we sell this product directly to you, cutting out the middleman and passing the savings along.

Equipped with the Belimo LM24-3-T Power Open/Power Close motor, this damper delivers 45 in-lb of torque, which is twice the strength of similar or even higher-priced dampers. It also uses significantly less power than traditional spring-return dampers, making it the ideal choice for efficient, reliable air control in both residential and commercial systems.

Backed by a 5-year industry-leading warranty, the RetroZone™ SD 10" damper is the trusted choice of A/C contractors and wholesalers across the U.S., and now available directly to you through our DamperDirect eBay store.

Key Features:

• Power Open/Power Close Motor: Powered by the Belimo LM24-3-T 3-wire motor with 45 in-lb of torque, twice the strength of comparable models, yet consumes much less power.
• Efficient Power Usage: Uses only 2 VA of power for a 90-second open/close cycle, compared to the 8–10 VAconstant draw of spring return dampers.
• Low Power Consumption: One 40 VA 24V AC transformer can power 20 or more dampers, making it extremely energy-efficient.
• Works with Most Systems: 24V AC powered, this damper works with almost all zone control systems and thermostats (no matter the brand).
• Durable Construction: Built with heavy-duty 22-gauge galvanized metal, bronze bushings (not plastic), and 18-gauge durable blades bolted on, ensuring long-lasting performance.
• Precision Control: Features precision open/close motor adjustments for fine airflow tuning, and the blade will remain stationary when de-energized.
• Full DuroZone Blade Seals: Full duct-rated seals for almost 0% leakage, improving system efficiency.
• Easy Manual Operation: Includes a clutch button for easy blade rotation during testing and a reversing switch to change blade direction.
• Direct Drive Quality: Unlike cheaper models, this damper uses direct drive technology with no gears or springs, ensuring smoother operation and longer lifespan.
• High Air Pressure Tolerance: Can handle air pressures of 2" or more, ideal for commercial HVAC systems.

Wiring & Installation:
This damper works perfectly with zone control systems or can be controlled directly via a thermostat or switch. The Belimo motor is designed with "one-wire trigger" capability, so no relays are needed. Simply wire 24V AC power to terminals 1 and 2, and use a switch or thermostat to control terminal 3. When power is applied to terminal 3, the damper closes; removing power opens it.
For direct thermostat connections, request a "slave zone" diagram with your order to ensure easy wiring.

Why Choose RetroZone™ SD 10" Round Damper?

• Energy Efficiency: The Belimo motor uses power only during opening and closing cycles, saving you on energy costs.
• High Durability: Built to withstand commercial HVAC pressures and daily use, this damper offers unparalleled reliability.
• Unbeatable Price: As the manufacturer, we offer commercial-grade quality at a price that competes with residential dampers.
• Industry-Leading Warranty: Enjoy peace of mind with a 5-year warranty, backed by our trusted support.

Technical Support:
Got questions or need help with installation? Contact us through our DamperDirect eBay store for expert guidance and customer support. We’re here to help!

Contact Information:

• eBay Messaging: Message us directly through the eBay store for assistance with orders and technical support.