Io Hvac Controls HD-2816-BM Zone Damper 28x16 Bottom Mount

Product Description

The IO HVAC CONTROLS HD-2816-BM is a two-position zone damper designed for rectangular duct systems in forced-air HVAC zoning applications. It installs at a bottom-mount position and controls airflow by switching fully open or fully closed in response to a zone controller or thermostat signal. The damper measures 28 x 16 inches (duct opening size) and weighs 12 pounds. Two-position operation makes it compatible with standard single-stage zoning systems, where proportional control is not required. HVAC technicians and mechanical contractors are the primary installers for this type of component.

This damper is suited for residential and light commercial forced-air zoning installations where duct runs require individual zone control. The bottom-mount configuration is selected when the actuator must be positioned on the lower face of the duct, a common requirement in tight mechanical rooms or attic installations where top-mount access is restricted. It fits rectangular duct openings sized at 28 x 16 inches and is appropriate for new construction and retrofit zoning projects.

Key Features

• Two-position operation - fully open or fully closed for straightforward single-stage zoning
• Bottom-mount actuator configuration for installations with limited top clearance
• 28 x 16 inch duct opening size suits medium to large residential trunk or branch ducts
• 12-pound construction indicates a robust, commercial-grade blade and frame assembly
• Designed for integration with standard zone controllers and low-voltage thermostats

Compatibility

Designed as an OEM-style replacement or new-installation zone damper for rectangular forced-air duct systems requiring a 28 x 16 inch two-position damper with bottom-mount actuator placement.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with forced-air zoning systems and low-voltage control wiring. Shut down the air handler and de-energize the zone control panel before mounting or wiring the damper. Verify duct opening dimensions and confirm actuator orientation matches the bottom-mount requirement before securing the damper to the duct. Low-voltage wiring to the zone controller should comply with NEC Article 725 and the equipment manufacturer wiring diagram.