Peter, While I am not a plummer, pipes are measured by the inside diameter, not the outside diameter. 2" - 3" would be correct. Jerry Rasmussen -----Original Message----- From: PCBUILD - Personal Computer Hardware discussion List [mailto:[log in to unmask]]On Behalf Of Peter Shkabara Sent: Tuesday, April 27, 1999 12:29 AM To: [log in to unmask] Subject: Re: [PCBUILD] Organizing all cables, powerlines behind computer? My writing speed exceeded my thinking speed:) I should have said to use a 2 1/2 to 3 1/2 inch diameter PVC pipe. A 5 inch pipe would be quite a cable tray! Peter Shkabara [log in to unmask] http://www.geocities.com/CollegePark/Lab/8342 -----Original Message----- What I did for my situation may be helpful to others. Take a 3 to 5 inch PVC pipe (depends on how many cables you have) and cut a slot in it lengthwise. PCBUILD's List Owner's: Bob Wright<[log in to unmask]> Drew Dunn<[log in to unmask]> PCBUILD's List Owner's: Bob Wright<[log in to unmask]> Drew Dunn<[log in to unmask]>