XTreme EFIS/EMS Dimensions:

The XTreme fits into a round 3 1/8” hole, but since the screen is a 4.3” sunlight readable LCD, the housing is offset from the hole.

XTreme EFIS
XTreme EFIS Dimensions (PDF)
XTreme 3D View (PDF)

XTreme EMS
XTreme EMS Dimensions (PDF)

 

Weights and Amps:
http://kb.mglavionics.com/article/AA-00649

 

XTreme dimensions