Digital control pressure independent external round retrofit terminals can upgrade those old existing HVAC systems to current standards of energy efficiency and comfort. They are designed to easily convert the old system powered or constant volume systems to energy efficient variable volume systems. They can also be used in newly designed systems as measuring devices and exhaust control valves.

2" Paint Brush

The Titus AG-85 is a duct mounted butterfly damper used in round duct applications. Continuously adjustable from fully open to fully closed. Friction pivots hold the heavy gauge blades at the desired setting. Damper blades open upward into air stream. Not recommended for use with flexible duct. Adjustable at screwdriver operator slot