New Beam Central Vacuum Motor Ametek Lamb 115334.  2 stage 7.2" Replaces the following part numbers : 115332, 115334, 115440, 115441, 115472, 115639, 115837, 116525. 

check to be sure the dimensions of your motor or motor housing area match or accommodate these dimensions

Blower 

Housing Diameter:  7.2" . Overall Height:  6 1/8"