Jeanie, instead of answering your email, I'll just post it here.
This is what I use. It's fabulous. I can pull out the bottom tray, take it outside and clean it and sanitize it. For a bed, I use a rubbermaid tub. I don't know the dimensions off the top of my head. It's about 5 - 6" tall. My girls can jump over the sides with no problem and the puppies stay confined until they are old enough to jump out. It is just long enough that I can place it on the end of this cage.
http://www.upco.com/cgi-bin/Upcol.st...duct/View/6203