This is a Rectify Series drop-in speaker system for Life-Like Proto 2000 E-Unit locomotives that have had their screwed-on weight removed. The system spans the drive-shafts and fits into the frame's slots. A touch of adhesive secures the system in place. Use them singly or as a pair for a bigger sound.
The speaker comes fully assembled and tested.
Dimensions are: 25mmH x 28mmW x 28mmL