This is a Rectify Series drop-in speaker system for both current-run Walthers Mainline and older sound-ready Proto2000 F-unit locomotives. For the current-run Walthers Proto F-units, use WLPR-F701-RC1.
The speaker uses the factory mounting screws and no modifications are needed to replace the factory speaker.
The speaker comes fully assembled and tested.
Dimension: 31mmH x 18mmW x 53mmL