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Model ABD-FD is an automatic balancing damper with a UL 555 rated 1½ or 3 hour static fire damper. The entire assembly is UL rated and approved. The ABD is designed to maintain a constant airflow volume in a HVAC application and calibrated to automatically adjust to changing pressures. The assembly will include an ABD, flanged sleeve, curtain fire damper (FD-150 or FD-350), and optional grille. The ABD-FD can be used in both supply and exhaust applications and must be mounted vertically.

• Pressure : 0.2 to 2.0 in wg (.05 kPa to 0.5 kPa)
• Volume: 25 to 275 cfm (.012 cubic meter per second to .13 cubic meter per second per second)
• Temperature: 25° to 150°F (-4°C to 65°C)