Patent attributes
A method of installing a combination door unit into a threshold of a house, comprising placing a combination door unit within a threshold opening of a house surrounded by a plurality of house frame studs. The combination door unit comprises a door frame, a threshold door hingedly coupled to the door frame, and a secondary door. The secondary door is hingedly coupled to a mounting frame and the mounting frame, the door frame, and the plurality of house frame studs are aligned when the combination door unit is placed within the threshold opening. The method of installing the combination door unit may also comprise the steps of leveling the combination door unit, removing the secondary door from the combination door unit, driving a plurality of fasteners through the mounting frame, through the door frame, and into the house frame studs, and replacing the secondary door on the combination door unit.