Looking for small footprint 110/220VAC squirrel cage blowers for several amplifier retrofit projects. The squirrel cage can be about 2- 1/2"-3-1/2" so that the unit will fit a space within the enclosure that is about 5-3/4" height (from flange to highest point on the fan). A mounting flange is helpful but not vital. If necessary, the chassis or the fan nozzle length can be modified to accommodate a slightly larger unit. Any help would be appreciated. Ron W2CQM/3