Invisible ZincAlloy Invisible Door Hinge Key benefits Clean, concealed appearance: hides the hinge mechanism inside the door for a streamlined, modern look that preserves interior design. Precise alignment: threedimensional adjustability lets you finetune leftright and inout positions using the hexagonal screws for a fit between door and frame. Strong and reliable: zinc alloy construction combines corrosion resistance and solid performance for everyday use. Supports heavy doors: designed to safely carry doors weighing up to 70 kg, reducing sagging and ensuring smooth operation. What it solves Eliminates visible hinge hardware that can disrupt aesthetics while maintaining full functionality. Makes onsite adjustments fast and accurate, so doors close evenly and gaps stay consistent. Provides the strength needed for heavier interior or office doors without swapping to bulkier hardware. Features and important attributes Material: durable zinc alloy construction for stability and corrosion resistance. Adjustability: threedimensional adjustments (leftright and innerouter) via hexagonal screws for precise alignment. Load capacity: supports doors up to 70 kg. Installation note: bottom hinge should be positioned close to the ground to maximize stability and performance. Practical applications Residential interior doors where a hidden hinge improves the clean look of living rooms, bedrooms, or closets. Office or commercial spaces that require a minimalist appearance while accommodating heavier doors. Renovation projects where correcting a misaligned frame or heavier replacement door needs an adjustable, robust hinge. Installation tips Place the bottom hinge close to the floor as specified to ensure proper weight distribution and stable operation. Use the hexagonal screws to make incremental leftright and inout adjustments until the door sits flush and swings smoothly. This invisible hinge provides a practical combination of concealed design, precise adjustability, and reliable load capacity for homes and offices.