Grey External Doors refer to high-performance exterior steel doors designed as a protective and architectural boundary for modern buildings, distinguished by their calm grey tone combined with refined metallic accents and engineered structural strength. This type of door integrates a reinforced steel core, precision aluminum framing, and advanced internal filling to deliver a solid, weighty feel that immediately sets it apart from ordinary exterior doors. The grey finish is not merely decorative; it is achieved through durable surface treatments that enhance corrosion resistance, color stability, and long-term weather performance. Beyond appearance, the door emphasizes security through anti-pry construction, concealed hinge systems, and a tightly sealed structure that improves sound insulation and environmental isolation. 

This product series supports a wide range of color and surface finish customizations, encompassing various metallic textures, fine sand textures, and composite coating effects. It can be flexibly selected according to different building facade styles and spatial design requirements, ensuring overall harmony, visual depth, and stable performance over the long term.

This series supports customization of various hardware accessories, covering different materials and surface treatment options. Styles range from minimalist to decorative, allowing for seamless integration with the door color and design, meeting the overall functional and aesthetic requirements of the complete door system.

This series of doors can be customized with two smart fingerprint lock options, supporting multiple unlocking methods such as fingerprint recognition and password entry. The locks have a design that is consistent with the door's overall style, balancing ease of use with comprehensive security requirements.