Overview
The Ultra-Thin 18mm Concealed Invisible Door Hinge is an architectural-grade 3D adjustable hidden hinge engineered for minimalist flush interior doors, secret doors, hidden wall panels, and high-end custom cabinetry. Designed with an ultra-narrow 18 mm leaf width, this concealed hinge requires significantly shallower mortise pockets, making it ideal for narrow door stiles and minimalist architectural jambs. With full 3-axis adjustment, unhanded non-directional installation, and durable all-metal zinc alloy construction, it delivers seamless flush closure and smooth, whisper-quiet 180-degree door swing.

Key Features

• Ultra-Narrow 18 mm Leaf Profile: Extremely slim 18 mm width minimizes router mortising depth and fits narrow-stile doors, slim aluminum profiles, and concealed secret panel installations without compromising structural integrity.
• Precision 3D Adjustment: Independent micro-adjustments in three dimensions (vertical ±1.5mm, horizontal ±1.5mm, depth ±1.0mm) allow precise door alignment after hanging, eliminating gaps and binding.
• Universal Non-Handed Design: Completely reversible geometry operates identically on left-hand and right-hand inward or outward swinging doors.
• Smooth 180° Full-Swing Pivot: Multi-link pivot arm mechanism opens up to 180 degrees, providing unobstructed clear walk-through passage and concealed flush seating when closed.
• Heavy Load Capacity: Premium solid zinc alloy body with high-tensile steel pivot pins supports up to 40 kg (88 lbs) per pair (or up to 60 kg with 3 hinges).
• Concealed Screw Cover Plates: Sleek snap-on magnetic or set-screw covers completely conceal mounting screws for an immaculate, seamless architectural finish.

Technical Specifications

• Product Type: Ultra-Thin 3D Adjustable Concealed Invisible Door Hinge
• Material: High-Density Zinc Alloy Body, Structural Steel Linkages & Pivot Pins
• Leaf Width: 18 mm (Ultra-Slim Narrow Profile)
• Opening Angle: 180 Degrees
• Door Handing: Non-Handed (Universal for Left & Right hand doors)
• 3D Adjustment Range:
  • Vertical (Up/Down): ±1.5 mm
  • Horizontal (Left/Right): ±1.5 mm
  • Depth (In/Out): ±1.0 mm
• Load Rating: 40 kg (88 lbs) per 2 hinges / 60 kg (132 lbs) per 3 hinges
• Available Finishes: Architectural Matte Black, Satin Silver / Brushed Chrome
• Applications: Concealed flush interior doors, hidden bookcase doors, wardrobe panels, secret doors, and minimalist architectural millwork

Wholesale & OEM Capabilities

• Factory-Direct Supply: Manufactured by Ningbo Dimon for door manufacturers, custom cabinet shops, architectural millwork contractors, and hardware importers.
• OEM Customization: Custom surface plating/finishes (Matte Black, Brushed Brass, Gunmetal, Satin Nickel), bespoke router milling templates, and private-label packaging.
• Export Packaging: Packed in pairs with protective inner blister trays, complete hex adjustment keys, and stainless steel wood screws in heavy-duty master cartons.