This is a Rectify Series drop-in speaker system for Walthers Proto SW9/1200 locomotives. The speaker mounts over the front truck and requires removal of the factory PCB and a hardwire decoder installation. For Life-Like branded P2K SW9/1200s, see item #LLPR-1200-087.
The speaker comes fully assembled and tested.
Dimensions are: 10mmH x 20mmW x 26mmL