A bit smaller than I expected to accommodate three 27 inch monitors.  But no fault of the product....just my miscalculation.  Easy to set up and very study.  Please pay attention to the setup instructions and DO NOT tighten the screws until you are certain that all parts are in place.  An excellent and functional product.  Wish I could have gotten the same unit with a larger upper shelf.  But as I stated, this is no fault of the product.  Very well built and nice looking in my study.