Convection fan for Whitfield pellet stoves. It has 4 bolt holes on the mounting plate, a molex plug connection, and a ground. 

This blower works with the following models: Advantage II - WP2, Advantage II-T - WP2, Advantage III - WP2, Advantage II-T Classic - WP2, Advantage Plus - WP7, Quest Plus - WP4, Optima 2, Optima 3, Prodigy I - WP3 Serial number 1001 - 2281 ONLY, Prodigy II - WP3 Serial number 1001 - 2281 ONLY, Profile 20 - P9, Profile 30 - P10, T300P - P11, T301P - P11, T305P - P11, T308P - P11

Compatible with Whitfield Part #: 12146109 and 12126109
Compatible with Lennox Part #: 52L02