A forcible entry training device for use with overhead doors includes an adjustable frame that is designed to hold a variety of overhead doors of different sizes, and also includes an adjustable support that applies support from the back of the door and thereby provides structural integrity to the door so that multiple vertical cuts can be made through the door. In one embodiment, vertical members in the frame are adjustably connected to horizontal members. Clamps are provided in the vertical members to secure the edges of the overhead door to the frame. Adjustable-length stabilizing legs can be used to hold the frame and door in an upright position, even when resting on an uneven surface.