Used in the following models: CB 475, CW 475, CS 475, CB 570, CW 570, CS 570, CB 665, CW 665, CS 665, CB 760, CW 760, CS 760, CB 855, CW 855, CS 855, CB 940, CW 940, CS 940, CB 1120, CW 1120, CS 1120, CB 1210, CW 1210, CS 1210, CB 1350, CW 1350, CS 1350, EP 150, EP 200, EP 250, EP 300, EB 150, EW 150, Efficiency Plus EB Parts, Efficiency Plus EW Parts, EB 200, EW 200, EB 250, EW 250, EB 300, EW 300, CH 750, CF 750, CH 300-750, Copper Fin II CF 300-750, CH 650, CF 650, CH 500, CF 500, CH 400, CF 400, CH 300, CF 300, RB 45, RB 75, RB 90, RW 90, RB 135, RW 135, RB 180, RW 180, RB 225, RW 225, RB 270, RW 270, RB 315, RW 315, RB 360, RW 360, RB 399, RW 399, RB 500, RW 500