This Ametek Lamb central vacuum motor is designed to fit the following models:

Motor Specifications:

Dual Tapered fan system

115 Volts

5.7" / 145mm Diameter

Dual ball bearings

Single speed

Tangential bypass discharge

Generic replacement

- See more at: https://evacuumstore.com/p-5505-beam-central-vacuum-motor-119992-00.aspx#sthash.yMng8SQR.dpuf