Cal-Royal CR3D51 3D Adjustable Invisible Hinges (Box of 6)

Usually Ships: 2-3 Business Days
  • For use with wood and hollow metal doors (1-3/8″ min. thickness)
  • Elegant minimalistic design, easy 3D adjusting system
  • Sold in boxes of 6 only

Available Options:


Cal-Royal CR3D51 3D Adjustable Invisible Hinges (Box of 6ea.), 5-1/8″ x 1-3/16″, 1-3/8″ Minimum Door Thickness

3D Adjustable Concealed Hinge for use with Wood and Hollow Metal Doors

  • Zinc Alloy manufactured for Oxidation Resistance
  • Durable Galvanized Steel Covers to conceal the screws
  • Easy 3D Adjusting System
  • Easy Installation and Maintenance Free
  • Complete Reversibility (same slot on the door and the frame)
  • Total Recessed Hinge Body (door and frame gap is very small)
  • Milling cut up to ¼” (6.5mm) from the internal edge
  • European Standard EN1634-2 for 30-Minute Fire Doors
  • CE Certified for 200,000 Opening / Closing Cycles
  • 100% Made in Italy
  • Elegant Minimalistic Design that is available in US1, US4, US10B, US14, US15, US26, US26D and US28 finishes with no visible screws


  • 180° Fluid Opening
  • 1 ⅜” (35mm) minimum door thickness
  • Overall Length: 5 ⅛” (130mm)
  • Width (frame part): 1 3/16″ (30mm)
  • Width (door part): 1 3/16″ (30mm)
  • Depth: 13/16″ (21mm)
  • Load Capacity: 3 or 4 Hinges – 70kg (154lbs), 2 Hinges – 50kg (121lbs)
  • Fire Proof Min. : EI-30’

Drilling templates and accessories available in our Hinge Accessories section



US1 Black, US28 Clear Anodized Aluminum, US10B Oil Rubbed Bronze, US26 Bright Chrome, US4 Satin Brass, US15 Satin Nickel, US26D Satin Chrome

Door Applications

Metal and Wood Doors (1-3/8" minimum door thickness)


5-1/8" x 1-3/16"

Box Quantity


Country of Origin


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Cal-Royal CR3D51 3D Adjustable Invisible Hinges (Box of 6)