Cause:
Need to manage cables neatly in a cabinet or rack.
Resolution:
The document attached below shows estimated fill rates for various APC cable management products and openings in NetShelter cabinets. The estimates take into account the outer diameter of the cable and fill ratio. This produces a fairly accurate estimate. Fill ratio is the percentage of available space that's unused because there are air gaps between the cables. The fill ratio factors in this unused area.
Please see attached file.