The onn. 24" monitor, Model: 100027813 does not have the room for most of the 75x75/100x100 VESA mounts. This is to provide the clearance needed. The files below are for two different spacing. A short, approximately 1mm from the back of the monitor and a taller stand off, approximately 5mm. onn. 24" FHD 1080p 165hz 1ms FreeSync Gaming Monitor.