[rescue] WAY OT: sliding rails - centermount

[Barry Fujii]

hey all,
	does anyone have a good source for centermount sliding rails?
I have recently purchased about 20 servers whose manufacturers/models
include:

dell 2450s
dell 2550s
valinux 2u boxes

are the mounting holes on the cases usually a standard pattern? i know
the mounting brackets on the rails must be - but im unsure of the case
holes.

does anyone understand my question?

barry