Easily removable LACK enclosure wall bracket

As I am currently building an IKEA LACK enclosure, I wanted a way to make sure it wouldn't topple over or vibrate too much when in use.
I designed this bracket with the design philosophy that it should be easy to pull the enclosure away from the wall without any special tools. All you need to replace is a cable tie holding the two parts together.

The slots are 3,5 mm in width.

I printed this in PLA, but materials such as nylon will probably be more suitable.

I will work on a way to get rid of the cable tie, but as it is, it seems to work fine.

There are two parts to print. Part A goes on the LACK table (or any other table, really) and part B goes on your wall.

These parts were designed in Fusion 360. Feel free to drop a comment if you see some way to improve upon the design.