Io Hvac Controls HD-BM-NA-1008 Zone Damper 10x8 Bottom Mount

Product Description

The IO HVAC CONTROLS HD-BM-NA-1008 is a two-position zone damper designed for duct zoning systems in residential and light commercial HVAC applications. This bottom-mount damper ships without an actuator, allowing the installing technician to select and pair a compatible actuator for the specific system requirements. The damper fits a 10-inch by 8-inch duct opening and accepts a 5/8-inch or 1/2-inch shaft. At just over 5 pounds, it is a manageable single-technician install. Zone dampers like this one are a core component in multi-zone forced-air systems, directing conditioned air to specific areas of a building based on thermostat demand.

This damper is suited for forced-air zoning installations in residential homes and light commercial buildings where independent temperature control is required across multiple zones. It is a bottom-mount configuration, meaning the actuator bracket and shaft access are located on the bottom face of the damper body. Because it ships without an actuator, it works in retrofit applications where the technician is reusing an existing actuator or selecting one separately to match the control board or zone panel already installed in the system.

Key Features

• Two-position operation opens and closes the damper blade for on/off zone control
• Bottom-mount actuator bracket configuration for accessible shaft engagement in tight duct runs
• Accepts 5/8-inch or 1/2-inch shaft, providing compatibility with a range of actuator options
• Ships without an actuator, allowing technician to select the appropriate actuator for the zone control system
• 10-inch by 8-inch duct opening fits standard rectangular duct sizes common in residential zoning layouts

Compatibility

Designed as an OEM-style replacement or new-installation zone damper for rectangular duct zoning systems requiring a bottom-mount, no-actuator, two-position damper in a 10-inch by 8-inch duct size with a 5/8-inch or 1/2-inch shaft.

Installation Notes

Zone dampers are installed by licensed HVAC technicians as part of a duct zoning system. Power down the air handler and zone control panel before installing or servicing the damper. The actuator must be sourced and mounted separately; verify shaft size compatibility before ordering the actuator. Installation should conform to the system manufacturer's zoning guidelines and applicable local mechanical codes.