What folks above have said, no gap! These cabinets use what's called a Nodal hinge-- it essentially swings without any displacement. Very clever design, Euro style. Allows for mounting anywhere. ...
https://ikeahackers.net/2015/05/hackers-help-gap-door-swing.html#comment-220769
Here's the No-Guesswork method: 1 - Assemble cabinet, with door and hardware, approximately where you want it 2 - Open door, and see if you have enough (or too much) room 3 - Reposition cabinet a...
https://ikeahackers.net/2015/05/hackers-help-gap-door-swing.html#comment-97600
Definitely don't need a gap at all, just a little rubber thing on the wall where the handle will strike it.
https://ikeahackers.net/2015/05/hackers-help-gap-door-swing.html#comment-97450