Guys im looking to make a custom Rack mount cube for my DVR system, Computer, and UPS and other items. Doesnt have to be big but anyway.
Being that i need a custom size and how expencive pre made ones are

Im chasing just the main rails that you screw the items into.

Any body know where i can buy some, Have tried searching everywhere most sites are over seas and even then not exactly what i want.

any help would be great thanks

Tim