Some pumps have impellers that may be adjusted at increments between the listed catalog curves. In those instances, this list should contain both the catalog trims, and the available trims that lie inbetween them. Because these are numbers, units are not included as part of the field value The appropriate unit label can be found in the numeric_unit property. If this list is empty, check string_impellers instead.

public List<double> numeric_impellers

Public numeric_impellers As List(Of Double)

public:
List<double>^ numeric_impellers