The 2-speed, 2-stage motor is the quietest on the market. With is 47 dB level noise on low power and 49 on high, this product is perfect for a daytime used. Design for Henry Dry vacuum from Nacecare. Two speed motor for Dry vacuum Henry from Nacecare The powerful 1.6 HP two speed and two stage vacuum motor is providing 110" of lift and 114 cfm for excellent soil recovery and longer carpet life. With noise levels of 47 dB on low power and 49 on high, these units are perfect for daytime cleaning. This 2 stage motor is designed for dry vacuum Henry from Nacecare. 2 speed, 2 stage, switch to the Auto-save stage on low speed to reduce power consumption by 50% while reducing suction 25%. This motor is used in several Nacecare and Numatic products. Mainly in the PVR / PPR dry 200s and 380s series vacuums.