Be sure to add me to your favorites list Casio 1980's Vintage "D" Battery Sized Battery Cover Door for Some Casio Model Electronic Keyboards. This is a battery cover for a Casio portable keyboard. It will fit over the battery compartment of several of those models that accept "D" sized batteries. This is the larger, LONG type, that covers most of the large battery compartment of some Casio models. This is NOT the shorter type that fits some models that take D batteries. This is from the 80's and most models that it will fit will be from the 80's and 90's. It is 10 and 5/16 inches long, and 1 and 13/16 inches across. Casio's that take a smaller type cover will not accept this. Let me know your model # and maybe I can help you decide if this one will fit your keyboard. Many "MT" and some "CT" models will take it. It is in good condition, not warped or cracked, and has it's latches intact. The sponge that was once inside of it is gone, but it's not necessary for it to work. A very small part of the interior is snapped off, but has no affect on it's use. This battery door shows some wear of course, but it will fit a Casio keyboard that can accept it perfectly. This part is an off-white color, but will replace those that are the same size that happened to be black or brown in color. 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!