MINI Door Shields are designed to fit doors that are 1-3/4-inch thick.  If doors are any thinner or thicker than 1-3/4-inches thick, you must use our PRO Door Shields, which will fit doors of just about any thickness.  One note of caution, if your door is 1-3/8-inches thick, you have an interior door.  Our Jamb Shield and Hinge Shields will also not fit this Door.  For 1-3/8-inch doors you must use a Door Armor Safe Room Kit!