Io Hvac Controls RM-1208-BM Zone Damper 12x8 Rectangular

Product Description

The IO HVAC CONTROLS RM-1208-BM is a rectangular zone damper designed for use in zoned forced-air HVAC systems. It features a bottom-mount configuration and ships with a 3-wire Belimo actuator rated for a 35-second travel time, giving the system controller precise, reliable airflow modulation. The damper opening measures 12 inches wide by 8 inches tall, making it a common fit for residential and light-commercial duct runs. Licensed HVAC technicians install this component as part of a multi-zone control system, where individual dampers regulate conditioned air to specific areas or rooms.

This zone damper is suited for rectangular duct installations in residential and light-commercial forced-air systems. The bottom-mount actuator position simplifies access in tight duct chases or attic installations where side-mount access is limited. The 3-wire actuator wiring scheme supports spring-return or proportional control depending on the zone control board in use. It is commonly installed alongside zone control panels and thermostats as part of a complete zoning retrofit or new-construction zoning layout.

Key Features

• 12 x 8 inch rectangular damper opening fits standard duct sizes in residential and light-commercial applications
• Bottom-mount Belimo actuator allows installation in confined duct spaces where side or top access is restricted
• 35-second actuator travel time provides smooth, controlled airflow transitions that reduce system noise and pressure spikes
• 3-wire actuator wiring supports compatibility with a wide range of zone control boards
• Package dimensions of 14 x 16 x 8 inches accommodate the actuator assembly within the overall footprint

Compatibility

Designed as an OEM-style replacement or new-installation zone damper for rectangular duct zoning systems using 3-wire Belimo-style actuators in residential and light-commercial forced-air HVAC applications.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with zoned forced-air systems and low-voltage control wiring. Power down the air handler and zone control panel before wiring the actuator to avoid damage to the control board. Verify duct dimensions and confirm the damper blade orientation matches airflow direction before fastening to the duct. Follow local mechanical codes and the zone controller manufacturer wiring diagram when making low-voltage connections.