Maybe just a matter of terms, but you want a foam that will compress some, but will not _permanently deform_. Some spray foams will compress, but will not rebound, leaving lots of room for parts to rattle around in. Bob -----Original Message----- From: Sridhar the POWERful [mailto:vance@ikickass.org] Sent: Wednesday, April 17, 2002 1:29 AM To: Chad Fernandez Cc: classiccmp(a)classiccmp.org Subject: Re: UPS was Re: Need Burroughs Tape Spec's <snip> Actually, you want noncompressible foam so that it doesn't get compressed, making empty space into which your equipment can fall. The main reason why newspaper is a bad packing material. You want something that will absorb shock *without* compressing. ^^^^^^^^^^^ Peace... Sridhar <snip>