About this 3D model
Designed to hold a 27" Dell monitor but it has a flat top so any base size will fit. Dimensions are 280mm x 180mm x 80mm (length x width x height) which perfectly fits the Dell I have at work. The notch in the back is slightly less than 30mm across. Can also be used to elevate small televisions and holds at least 100 lbs (tested by standing on it).