This is a Rectify Series drop-in speaker system for Life-Like P2K S1/S3 locomotives. The speaker requires removal of the 1.5 oz. weight and factory PCB with a hardwire decoder installation. The speaker mounts using the factory screws used to hold the weight in place.
It appears that the front mount can vary in height a little depending on the model, so a styrene shim may or may not be reuired. If one is required, simply trim some styrene stock of the needed thickness, drill a hole through the middle and place between the enclosure and frame-mount when screwing together.
The speaker comes fully assembled and tested.
Dimensions are: 10.5mmH x 16mmW x 50mmL