airFMModCoilDiffPresInWC 1.3.6.1.4.1.318.1.1.13.1.5.2.2.1.11

The difference in pressure on either side of the cooling/dehumidification coils. Measured in hundredths of inches water column. A value of -2147483648 indicates that this OID does not apply to this device due to its configuration.