Google Nest wall mount EU

My friend ask me for a google Nest wall mount, i found some model online but they was too basic and statics so i decide to create my own, after a few try for the tollerance of the locking this is the result.

For the 503 adapter you need 2 screw and obviusly the screws for the Nest

Hope u enjoy, 

if u find problem to print please let me know