The minimum physical media size across the feed direction of
this media path expressed in units of measure specified by
prtMediaPathMediaSizeUnit. A value of (-2) implies 'unknown'.
Additional information:
The value returned by this object depends on the value
of prtMediaPathMediaSizeUnit. For the simplex path it is 30000 if prtInputDimUnit is
ePtenThousandthsOfInches or 76200 if prtInputDimUnit is ePmicrometers. For the duplex paths it is 71654
if prtInputDimUnit is
ePtenThousandthsOfInches or 18200 if prtInputDimUnit is ePmicrometers.