Be sure to add me to your favorites list Casio Battery Cover Door Part for the Casio CT360 and CT615 Casiotone Electronic Keyboards, where the Batteries are inserted at the TOP of the Keyboard. This is a battery cover for some Casio portable keyboards. It will fit over the battery compartment of some of those models that accept "D" sized batteries that are inserted into the TOP of the keyboard, as opposed to the bottom, which is far more common. This is the smaller, shorter type, that covers a small area where D batteries are inserted on some Casio models with the battery door on top of the instrument. The models that I know it will fit are the CT360 and the CT615. There are other models that may be able to use it, as I know there are other Casiotone (CT) models that take the batteries in the top of the keyboard. Most Casio keyboards have the batteries inserted into the bottom of the instrument, and this is NOT the cover that you need for any of those (though I may have one that you need though, just ask). It is in very good condition, not warped or cracked, and has it's latches intact. It will complete your keyboard, and keep your batteries inside, with no need for tape. So, replace your lost or broken cover with this one! Thanks for looking! Check out my Store!