Io Hvac Controls LD-1808-BM Rectangular Zone Damper

Product Description

The IO HVAC CONTROLS LD-1808-BM is an 18 x 8 inch rectangular, two-position zone damper designed for duct zoning applications in forced-air HVAC systems. It ships with a 3-wire actuator and an integrated LED indicator that confirms actuator position at a glance. The bottom-mount actuator configuration suits installations where side or top access is restricted. Licensed HVAC technicians use this damper to divide a single air handler or furnace into independently controlled zones, improving comfort and system efficiency without requiring separate equipment.

This damper is suited for residential and light-commercial zoning applications using rectangular ductwork. It fits inline into an 18 x 8 inch rectangular duct run and is controlled by a standard two-position zone control board. The bottom-mount actuator design makes it practical in attic, crawlspace, and tight mechanical room installations where clearance above or beside the duct is limited. It is typically installed by licensed HVAC technicians as part of a multi-zone ducted system retrofit or new construction zoning layout.

Key Features

• Two-position operation: fully open or fully closed for simple zone control
• 3-wire actuator with integrated LED for visual position confirmation
• Bottom-mount actuator placement for installations with limited side or top clearance
• Rectangular design sized for standard 18 x 8 inch duct openings
• Compatible with standard two-position zone control boards and panels

Compatibility

Designed as an OEM-style replacement or new-installation zone damper for residential and light-commercial forced-air systems using 18 x 8 inch rectangular ductwork with two-position zone control.

Installation Notes

Installation should be performed by a licensed HVAC technician. Power down the air handler or furnace and de-energize the zone control panel before wiring or mounting the actuator. Secure the damper inline with the duct run per the manufacturer mounting instructions and verify the LED indicates correct open and closed positions before restoring power. Follow all applicable local mechanical codes during installation.