50 CFM BLOWER AMETEK, #116896-69. Motor is rated 220 VAC 3.8 amps 60 Hz. Sleeve bearings. Has a universal brush style motor. Intermittent duty. Thermally protected. Single stage pass through centrifugal design. The blower will move approx 50 cfm of air at a vacuum of approx 30" of water. NOTE: This unit can be operated on 120 volts AC or Dc if required but the output may decrease. The circular inlet has a 1-1/2" O.D. The circular outlet has a 3-3/4" O.D. The blower is mounted in a circular metal housing. The interior of the housing is lined with a sound absorbing material. Electrical connections are via 6" long flexible leads. The unit has a 6-1/2" square sheet metal mounting base attached to the inlet side of the housing. This is removable. Dimensions: 7-1/2" outside dia x 6" deep. The square base adds approx 7/8" to the depth of the blower. MD563