Laundry dryer including a body case forming an exterior of the laundry dryer, a drum in the body case for holding a drying object, a heater assembly in the body case for heating air to supply hot air to the drum, a panel frame on a front of the body case, having an opening in communication with a space having the heater assembly mounted therein, and a control panel mounted to the panel frame selectively, having buttons for making various operation, thereby permitting easy handling of the operation buttons on the control panel even if two or more than two dryers are arranged in any type, and improving workability of replacement or repair of the heater assembly.