Ametek motor 117123 240v 5.7 inch 3 stage for central vacuum systems. The mb117123 was used in the following central vacuum models: Astrovac SR89 also used by other manufacturers including: Beam, brute, filter, M & S, md, no one, and power star.
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Three stage – 240 volt – 5.7″diameter tangential bypass
Motor performance ratings
Watts: 1533 air watts: 450 sealed vacuum: 137.1 inches, max airflow: 95.1 cfm