The 60146 Mr Heater XHFY2004G Pressure Switch is rated at 0.44" of Water Column an was used on various MHU and HSU Series garage and workshop Compact Unit Heaters using Natural Gas (NP) or Liquid Propane (LP) by Enerco.

The 60146 Pressure Switch fits the following Mr. Heater Models:
MHU45LP
MHU 45LP
MHU45NG
MHU 45NG
MHU80LP
MHU 80LP
MHU80NG
MHU 80NG

The 60030 Pressure Switch fits the following Heatstar models:
HSU45LP
HSU45NG
HSU80LP
HSU80NG

This 60146Pressure Switch was made by Glee Ruler under the part number XHFY2004G/40"WC