Ametek Lamb 5.7" Dia, 2 Stage Thru flow Central Vacuum Motor #122287-07This Ametek Lamb central vacuum motor delivers professional grade performance with its dual stage thru flow design and 5. 7" diameter construction. Built for sealed systems, it achieves impressive water lift capabilities reaching 136" H2O while maintaining airflow rates up to 135 CFM. The Advantek motor technology optimizes energy consumption, requiring less input power to generate equivalent air performance compared to conventional designs. This