Door according to the form can be divided into: ordinary door. A door in door. Composite doors and composite doors.
Door in door: existing fence door and door has the advantages. It the door to the fence gate. The fence gate after have a small door. Open the door can be as a fence gate ventilation purposes. Closed doors as the role of even open the door.
Zimu door: generally used for household door frame larger homes. That usually accessible. Let big furniture easily moved into.
Composite door: also known as a box of two doors. The front door is the door. The back door is closed.
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