My suggestion is not to look at industrial product companies but to talk to people who are used to working in data centres. I have used http://www.keyzone.com/Data_Centre_Solutions.htm (020 8900 1525) on a couple of jobs with very good results. They offer this system for any racks that you may have but as I had a new install I went with their approved racks. The curtains fit on to their approved racks better then standard racks and they also have vertical barriers for within their cabinets.
This system pays for it self within a few months for most average size data centres, I read some where that Yahoo estimated that they would save £1million per year if they installed this in one of their data centre (they already have a small install).
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This system pays for it self within a few months for most average size data centres, I read some where that Yahoo estimated that they would save £1million per year if they installed this in one of their data centre (they already have a small install).