Two that id recommend are Datatechniques and Matrix Communications.
Ive done whole data centre builds and office builds with them both as
well as one off circuits, professional and caring.
sophie.b...@datatechniques.co.uk / joe.harri...@datatechniques.co.uk /
http://datatechniques.co.uk/
and enq
I have used these at $previous job for a 400 rack site and they worked
out well. We found many of the other types to leak air and need clips
that run off to never be found again.
These just clip in, no seperate parts.
http://www.ebuyer.com/188594-apc-modular-toolless-rack-blanking-panel-black-1u-
