Thomas Mdl: 2737CM39 Vacuum Air Pump Emerson Mdl: SA55ZZHRM-4636 Electric Motor. Unit powers up and appears to be in good physical and working condition. Unit was removed from a working environment.The item "Thomas Mdl 2737CM39 Vacuum Air Pump Emerson Mdl SA55ZZHRM-4636 Electric Motor" is in sale since Saturday, December 22, 2018. This item is in the category "Business & Industrial\Electrical Equipment & Supplies\Other Electrical Equipment & Supplies". The seller is "tystylecoop" and is located in Madison, Ohio. This item can be shipped worldwide.