1. According to the opening method, they can be classified as: fixed Windows, top-hung Windows, middle-hung Windows, bottom-hung Windows, vertical rotating Windows, swing doors and Windows, sliding swing Windows, sliding Windows, swing bottom-hung doors and Windows, sliding doors and Windows, sliding swing Windows, folding doors, floor spring doors, lift sliding doors, sliding folding doors, and inward-tilting side sliding doors.
2. According to performance, they are classified as: ordinary doors and Windows, soundproof doors and Windows, and thermal insulation doors and Windows.
3. According to the application parts, they are classified as: interior doors and Windows, exterior doors and Windows.