I have recently done some new cat5 runs for the three walgreens stores in town here. I wish the original installers had left something of a service loop. They all have 5 1/2' rolling cabinets within the pharmacies, no problem getting the wire down the wall with the existing pipe and a 12x12 j box but getting the rolling cabinet more than a foot from the wall was tough. Just enough room for me to squeeze between the shelf and the cabinet. But then these jobs are spec'd from the company when the building goes up. Funny thing, two of the buildings were finished in the last 6 months,thats some foresight.