Ewc Controls END-20X12 Motorized Zone Damper 20x12 24V

Product Description

The EWC CONTROLS END-20X12 is a rectangular motorized zone damper designed for forced-air HVAC zoning systems. Operating at 24 volts, this ND series damper controls airflow in rectangular ductwork measuring 20 inches by 12 inches. The side-mounted motor connects via a 3-wire configuration and uses nylon bushings for quieter operation compared to standard damper designs. An onboard LED indicator allows technicians to visually confirm damper position during commissioning without additional test equipment. The reinforced frame is built for faster duct integration and extended service life, reducing the likelihood of callbacks related to noise or mechanical failure.

The END-20X12 is suited for residential and light-commercial zoned HVAC applications where independent room or zone temperature control is required. It fits into rectangular supply or return duct runs as part of a multi-zone air distribution system. Typical installations involve pairing the damper with a zone control panel and individual thermostats to regulate conditioned airflow to specific areas of a structure. The air quality application rating makes it appropriate for systems where controlled air distribution is a priority.

Key Features

• 24-volt operation compatible with standard low-voltage zoning control panels
• LED indicator light for visual damper position verification during startup and service
• Nylon bushings reduce operating noise for quieter system performance
• Side-mounted motor with 3-wire connection simplifies field wiring
• Reinforced rectangular frame for faster, more secure duct installation
• Designed for reduced callbacks through longer motor service life

Compatibility

Designed as an OEM-style replacement or new-installation motorized damper for rectangular duct zoning systems requiring a 20-inch by 12-inch damper with 24-volt low-voltage control.

Installation Notes

Installation should be performed by a licensed HVAC technician. De-energize the air handler and zone control panel before making any wiring connections. Verify the duct opening matches the damper frame dimensions before securing, and confirm the motor is oriented to the side-mount position per system layout requirements. Follow NEC low-voltage wiring guidelines when routing the 3-wire motor leads back to the zone control board.

Technical Specifications

• Product Type: Motorized Zone Damper
• Size: 20 inches x 12 inches
• Shape: Rectangle
• Voltage: 24 volts
• Wires to Motor: 3
• Motor Mount: Side
• Application: Air Quality / HVAC Zoning
• Features: LED Indicator Light, Nylon Bushings

Standard Information

• Brand: EWC CONTROLS
• Manufacturer Part Number: END-20X12