The automatic dispenser is powered by four

EZH2O COOLER VR BUBB KIT-SS

The cap extends 2-5/16 inches from the mounting surface once properly installed

Unit can be powered by AC adapter or 4 Alkaline "D" Cells (not included)

a one-piece

Century 1/4 to 1/6 HP Condenser Fan Motor,Permanent Split Capacitor,1625 Nameplate RPM,208-230 Voltage,Frame - 9724 Nominal Size-12" X 1.25" The automatic dispenser is poweredMulti Mount and Multi HP PSC Condenser Fan Motors,NEMA frame: 42 (5" body dia.) Enclosure: totally enclosed air over Mounting: stud band hole Service factor: 1. 0 Insulation: Class B Max. ambient: 60C Thermal protection: auto Duty: continuous air over Bearings: ball,Motors replace 4. 33", 4. 42", and 4. 62" mounting bolt circle without having to change capacitors or follow complicated wiring diagrams. Energy efficient PSC design with high efficiency