Invisible Door Hardware

NHN® Invisible Door Hardware

Hidden Door Hinge / Concealed Door Closer


Features

NHN invisible door hardware offers beautiful and contemporary streamline appearance to the doors.

KT3D series completely hidden door hinge and NHN 1600U-M/495 high performance concealed door closer are designed to be mounted inside the door/frame so that keeps the aesthetic door appearance, ideal for the entrance where conventional type of door hinges/overhead door closers are not suitable or would interfere architectural design.
Suitable for wooden, steel and aluminum doors, ideal solution for modern commercial and residential buildings.


NHN KT3D is an innovative door hinge that is completely concealed into door and door frame.
The 3-D adjustability enables to make the hinge installation very easy and highly efficient. The opening angle of 180 degrees allows door to swing fully open. Combining with NHN 1600U-M/495 concealed door closer, offers beautiful and contemporary streamline door appearance with self-closing feature.

NHN 1600U-M / 495 are a super-thin, stylish, robust and high performance Concealed Door Closer.
With the door closed, the main body and lever are completely concealed into door and door frame to streamline the external appearance. Combining quality, efficiency and functionality, NHN 1600U-M/495 provides smooth door closing motion utilizing a needle bearing, ideal for hotel rooms, reception rooms, powder rooms, hallways, modern offices etc.

NHN invisible door hardware is a smart solution that integrates functionality into design.
Perfect for hotel guest rooms / conference rooms / reception rooms / modern storage / powder rooms / hallway doors etc.

Lineups


NHN KT3D series – Hidden Door Hinge

  • Concealed into door and door frame.
  • 3-D adjustability
  • Opening angle :180 degrees
  • Non-handed, works for left/right doors.
  • Body: Special zinc alloy
  • Arms: Aluminum
Invisible Door Hardware Catalog
Model KT3D-140 KT3D-199 KT3D-200
use Internal Only
Max door size 900 x 2400 mm (35.4 x 94.5”) 1000 x 2400 mm (39.4 x 94.5”) 1200 x 2400 mm (47.2 x 94.5”)
Min door thickness 40 mm (1.6”) for wooden door
36 mm (1.4”) for steel door
55 mm (2.2”) for wooden door
50 mm (2”) for steel door
Max door weight (with 2 hinges) 60 kgs. (132 lbs.) 105 kgs. (231 lbs.) 160 kgs. (352 lbs.)
3-D adjustability Vertical ±2.5mm(±3/32”)
Horizontal ±2mm(±5/64”)
Depth ±1mm(±3/64”)
Vertical ±3mm(±1/8”)
Horizontal +3mm(1/8”) or -2mm(-5/64”)
Depth ±1mm(±3/64”)

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NHN 1600U-M / 495 series – Concealed Door Closer

Invisible Door Hardware Catalog
Model 1628U-M 1638U-M 495
Use Internal Only
Applicable door width 550 – 850 mm
(21.7 – 33.5”)
750 – 950 mm
(29.5 – 37.4”)
550 – 1100 mm
(21.7 – 43.3”)
Min. door/frame thickness
(for standard installation)
Door : 35 mm (1.4”)
Frame : 35 mm (1.4″)
Door : 49 mm (1.93”)
Frame : 40 mm (1.57″)
Min. door/frame thickness
(for top jamb installation)
Door : 35 mm (1.4”)
Frame : 35 mm (1.4″)
Door : 40 mm (1.57″)
Frame : 49 mm (1.93”)
Applicable door weight 25 – 40 kgs.
(55 – 88 lbs.)
40 – 60 kgs.
(88 – 132 lbs.)
30 – 100 kgs.
(66 – 220 lbs.)
Max opening angle 105 deg. 120 deg.

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