I'm looking for dimensions of SAMPO Monitor to fix the screen (I don't know if it's a standard VESA, and which one is it VESA100, 200,30,400 etc...)
because we've sold an Executive Collection 2WC and the customer doesn't want screens on the wall
Assuming you mean the Sampo 50".
1256mm (W) x 762mm (H) x 135.7mm (D) weight is 68.3 lbs / 31 kg
Polycom Custom products can provide a quote for converting HDX Media Centers or HDX Executive collection from wall to stand or the other way.