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
• Volume: 25 to 275 cfm
• Temperature: 25° to 150°F