This is a BRAND NEW OEM Rheem/Weather King/Corsaire/RUUD 4 Speed Protech Blower Motor. It is designed by Rheem/Ruud to replace many older motors. The Horse Power range is 1/4 – 3/4 depending on how you wire it.. The Rheem/Weather King/Corsaire/RUUD part number is 51-23017-42. This motor is 5 5/8 in diameter (Frame 48Y) and has a wiring diagram on the side of the motor. The rotation is reversible. Motor can be mounted with a belly band around the center, or using Rheem’s 4 mounting arms that come screwed into some OEM Rheem/Ruud motors. The motor you are purchasing is brand new. When installing a new motor the motor manufactures highly recommend that you install a new capacitor at the same time. Old capacitors can become weak over time and have a negative effect on the new motor. We have the capacitors that go with this motor in our store. You can locate the one you need by searching our store for part # CAP011253O. Partial List of Rheem/Ruud/Weather King/Corsiare Units that use this Blower Motor. RGDJ-12EARJR RGDJ12EARJR RGDA-150E-JR RGDA150EJR UGDA-150E-JR UGDA150EJR WGDA-150E-JR WGDA150EJR MGDA-150E-JR MGDA150EJR RGDE-12ERAJR UGDE-12ERAJR WGDE-12ERAJR RGDE12ERAJR UGDE12ERAJR WGDE12ERAJR UGDC-12-EEB-JR RGDC-12-EEB-JR UGDC-12EEBJR RGDC-12EEBJR UGDC12EEBJR RGDC12EEBJR RGDE-10EQAGS UGDE-10EQAGS WGDE-10EQAGS RDGE-10EQAGS RGDE10EQAGS UGDE10EQAGS WGDE10EQAGS UGDE-07EMAGS RGDE-07EMAGS WGDE-07EMAGS UGDE07EMAGS RGDE07EMAGS WGDE07EMAGS RGDA-150E-JR UGDA-150E-JR WGDA-150E-JR RGDA-150EJR UGDA-150EJR WGDA-150EJR RGDA150EJR UGDA150EJR WGDA150EJR UGRA-10EZAJS RDGE-10EQAGS RGRA-10EZAJS UGUG-10EBRJR RGUG-10EBRJR.