Leakage Testing of shut-off damper as per AMCA 511

Leakage testing of damper, 8'X8' biggest damper ever tested in our in-house facility. Shut off damper used in industrial application to shut off industrial process control systems. The damper leakages were found within the limits and can be classified as Class II as per AMCA 511. Leakage at 8.5 in. w.g was 26.15 cfm/sq. ft.