French doors are characterized by two hinged door panels with large glass sections, allowing maximum light transmission while creating a visually open space. They are commonly used as balcony doors, patio doors, garden doors, or interior connecting doors. CITL French doors are manufactured using premium materials such as aluminium, steel, or uPVC frames, combined with toughened or laminated glass for safety and durability. These doors offer a balance of style, ventilation, and functionality, making them suitable for modern architecture and interior designs.