Mirror doors generally refer to doors that have mirrors installed on them. There are a few common types of mirror doors based on their design and functionality:

1. Full-Length Mirror Doors: These doors have mirrors that cover the entire surface of the door. They are often used in bedrooms and dressing rooms.

1. Mirrored Sliding Closet Doors: These are typically used for closets and slide open horizontally. They save space compared to hinged doors and provide a full-length mirror when closed.

1. Mirrored Cabinet Doors: These are doors on cabinets or storage units that have mirrors on the front. They are commonly found in bathrooms and bedrooms.

1. Larger wardrobe units often come with mirrored doors that slide or swing open, similar to sliding closet doors.

1. Mirrored Barn Doors: These are sliding doors with a mirror surface, often used in modern and rustic interiors for both style and functionality.

These types of mirror doors vary in design, size, and installation method, catering to different needs and interior styles.