Well open rack vs closed racks basic decisions are as follows:

1. Do you need a controlled environment for your equipment because your current room does not have sufficient HVAC ? a. Yes = Enclosed Cabinet b. No = Open rack or frame only cabinet
2. Do you need to prevent public access to your equipment because your current room is not secured or if secured there is still a need to restrict access to the equipment ? a. Yes = Enclosed Cabinet b. No = Open rack or frame only cabinet
3. Do you have a very dirty environment where a enclosed cabinet might offer some contamination protection for your equipment thereby extending equipment life ? a. Yes = enclosed cabinet b. No = frame only cabinet or open rack


That should narrow it down somewhat for you, to look at different options for two-post racks, four post racks, cabinets, and such go to www.chatsworth.com.

Hope that helped you decide.