Io Hvac Controls MBD-1806-BM Manual Balancing Damper

Product Description

The IO HVAC CONTROLS MBD-1806-BM is a manual balancing damper sized at 18 x 6 inches, designed to regulate and balance airflow in ducted HVAC systems. The unit features a locking quadrant positioned on the 18-inch side, allowing the technician to set a precise blade position and secure it in place to maintain consistent airflow distribution. At 6.45 pounds, it is a durable field component suited for permanent installation in low-pressure supply or return duct branches. HVAC technicians and sheet metal installers use this damper during system commissioning to dial in zone-by-zone airflow across residential and light commercial applications.

This damper is intended for installation in rectangular duct systems where manual airflow balancing is required. It is commonly installed in supply branches, trunk takeoffs, or return-air pathways where adjustable restriction is needed to balance static pressure across multiple zones. The locking quadrant on the 18-inch side makes blade-position adjustments straightforward during initial commissioning or seasonal rebalancing. It is well suited for residential forced-air systems and light commercial single-zone or multi-zone duct layouts where automated control is not required.

Key Features

• Manual blade adjustment with locking quadrant on the 18-inch side for secure, repeatable airflow settings
• 18 x 6 inch duct opening size fits standard rectangular duct branch connections
• Locking quadrant prevents blade creep after balancing is complete
• Lightweight at 6.45 pounds for straightforward field handling and installation
• Designed for permanent in-duct mounting in supply or return branch applications

Compatibility

Designed as an OEM-style manual balancing damper for installation in standard rectangular ducted forced-air HVAC systems with an 18 x 6 inch duct opening.

Installation Notes

Installation is typically performed by a licensed HVAC technician or sheet metal installer. The air handling system and associated electrical equipment should be powered down before cutting into ductwork or securing the damper in place. The damper should be fastened per local mechanical code requirements, with duct joints sealed using approved mastic or metal tape in accordance with applicable energy codes. Do not force the blade past its mechanical stop when adjusting the locking quadrant.