[LTwin86]

Hi, guys.
Here is my report of such a cool interior update.
To to this, you need 2 sets of vents for Mercedes Benz W176 W117 X156 W246 CLA/GLA/A/B-Class and a few hours of free time.
You can choose big or small diameter vents from this set and install it, i preferred small diameters because of small gap like factory one.