Fasco Exhaust (Combustion) Blower Motor and Impeller without housing. It has 6 bolt holes that are 3-1/4" apart. This part includes motor mounting gasket. Works with the following pellet stoves: 

Whitfield: Profile 20 FS & FS2 (P9), Profile 30 FS & FS2 (P10), Optima 2, Optima 3, Quest Plus (WP4), Traditions T300P (P11), Traditions T301P (P11), Traditions T305P (P11), Traditions T308P (P11)

Compatible with Whitfield part # 12050011 & 12020011
To order the gasket only go to part #15-1026 which also shows the 7" OD 6 bolt hole dimensions.

Travis Industries: Avalon Newport FS & Insert, Lopi Yankee FS & Insert 

Compatible with Travis Industries part # 93005535

 NOTE: This blower has a molex plug that may need to be cut and wire nuts used.