The handle clips nicely into place on the metal frame protruding from the front of the cupboard door. The handle extends 25mm below the bottom of the cupboard door, and is 35mm wide.
The tall part at the rear of the handle should be affixed to the inside of the cupboard door using some strips of double-sided tape or similar. Without this, the handle will come loose when pulling it forward to open the cupboard. But once installed properly, the whole setup feels very sturdy. Update: After a year of use, the handles have remained in place.
Designed in Fusion 360, and sliced using PrusaSlicer with 15% aligned rectilinear infill, at 0.25mm layer height.
The author marked this model as their own original creation.