Description
Honeywell MARD-18 18″ Round Zone Damper with Floating Actuator
The Honeywell MARD-18 is an 18-inch round zone damper engineered for reliable, precise airflow control in residential and light commercial HVAC zoning applications. Featuring a built-in 24Vac floating actuator with a power open/power closed, three-wire configuration, this damper delivers positive positioning in both directions — eliminating the need for a return spring and ensuring dependable operation regardless of system orientation or duct pressure.
Key Features
- 18-inch round damper for use in standard round ductwork
- 24Vac operating voltage for compatibility with conventional zone control systems
- Power open / power closed actuation — no return spring required
- Three-wire floating actuator for precise, bidirectional blade positioning
- Integrated actuator design simplifies installation and reduces component count
- Suitable for residential and light commercial HVAC zoning systems
- Compatible with most zone control panels and thermostats using floating control signals
Product Specifications
- Brand: Honeywell
- Model / SKU: MARD-18
- Damper Size: 18″ Round
- Control Voltage: 24Vac
- Actuation Type: Power Open / Power Closed
- Wiring: Three-Wire Floating
Application
The MARD-18 is ideal for HVAC zoning installations where positive damper control is required in both the open and closed positions. The floating actuator responds to zone control panel signals to modulate or fully open/close airflow, making it well-suited for multi-zone forced-air systems in homes, offices, and light commercial buildings.
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