Research Products 6721 Motorized Damper 8x8 in 24VAC

Product Description

The RESEARCH PRODUCTS 6721 is a motorized square damper designed for zone control in residential and light commercial HVAC duct systems. Operating on 24 volts AC at 60 Hz, it draws 6 watts and carries a 12 VA rating, making it compatible with standard low-voltage zone control boards and thermostats. The rectangular blade assembly measures 8 inches by 8 inches, fitting standard square duct openings of that size. Licensed HVAC technicians install this damper to regulate airflow between zones, improving system efficiency and occupant comfort. It is a direct-wired, motorized unit actuated by a 24 VAC signal from a zone controller.

This damper is suited for forced-air zoning applications in residential and light commercial buildings. It fits into 8-inch by 8-inch rectangular duct sections and is actuated by a standard 24 VAC zone control signal. Typical installations include multi-zone split systems, air handler duct branches, and retrofit zoning projects where independent room or area temperature control is required. The 60 Hz operating frequency confirms compatibility with standard North American electrical systems.

Key Features

• 24 VAC motorized actuation compatible with standard low-voltage zone controllers
• Rectangular blade design sized for 8 x 8 inch duct openings
• 6-watt power draw with 12 VA rating keeps transformer load low
• 60 Hz rated for standard North American HVAC electrical systems
• Designed for multi-zone forced-air duct applications in residential and light commercial settings

Compatibility

Designed as an OEM-style replacement or new-installation motorized damper for 8 x 8 inch rectangular duct openings in 24 VAC forced-air zone control systems.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect power to the air handler and zone control panel before wiring or mounting the damper. The low-voltage wiring connections must comply with NEC requirements for Class 2 circuits. Verify that the zone controller transformer VA capacity can support the added 12 VA load before completing the installation.

Technical Specifications

• Voltage Rating: 24 VAC
• Power Rating: 6 watts
• VA Rating: 12 VA
• Frequency Rating: 60 Hz
• Shape: Rectangular
• Length: 8 inches
• Width: 8 inches

Standard Information

• Brand: RESEARCH PRODUCTS
• Manufacturer Part Number: 6721