23 inch electric fireplace insert, ultra thin heater with crystal & realistic flame, remote control with timer, overheating protection, with side light. Main Material: Tempered Glass+Sheet Metal+Plastic. Clear size and key guidelines. The fireplace size map can be used to match the perfect furniture. The Crystal are individually packaged, you caneasy to put in them as you like, you can also put other decoration you like, but make sure that's safe and available.