33 being slightly concave in an airfoil or wing shape downwardly to propel air rightwardly as shown by the arrow each blade 33 then inclines at a selected angle to the axis of rotation of the impeller each blade 33 shown extends axially and radially toward the outlet or second end 18 to direct air axially with a rotary component if the motor 34 runs in the opposite direction the incline of the blades 33 would be reversed the fan 14 includes a stationary cylindrical mounting ring 38 that extends around the blades 33 with the impeller hub 32 being rotably mounted relative to the mounting ring 38 the mounting ring 38 has spaced protruding upstream and downstream rims 40 and 41 the fan 14 mounts in the housing 13 between the cowling 19 and the shelf 26 each of the vanes 15 is identical and includes upstream portion 43 and a downstream portion 44 the upstream portion 43 is carried in a stator 46 the stator 46 has a cylindrical stator hub 47 with a diameter substantially equal to the diameter of the impeller hub 32 the upstream portions 43 of the vanes 15 are mounted in a circumferentially spaced arrangement around the stator hub 47 and extend longitudinally along and radially from the stator hub 47 each upstream portion 43 has an upstream end 48 and a downstream end 49 a support body 50 includes a cylindrical stator ring 52 that extends around the upstream portions 43 and connects to the outer ends of the upstream portions 43 of the vanes 15 near the upstream ends 48 the support.