Our hutch securely attaches to our buddy and pc desks and will provide additional storage space. the small shelf on the right of the hutch is large enough for cd"s or other special items. when ordered with a desk, the attachment bolt holes will be pre-drilled at the factory. if the hutch is ordered separately for an existing desk, we include the attachment hardware as well as a jig for drilling the 4 attachment holes in the desktop. the hutch itself is 44.5-Inch wide, 10.5-Inch deep and 18-Inch high and bolts directly to the desktop. the monitor opening is 22-Inch wide by 18-Inch high.