Ed Simply for the ability to easily take down and transport the toroid taking up the minimum of space - and yet still be durable. Alex ---------- From: Tesla List <tesla-at-pupman-dot-com> To: tesla-at-pupman-dot-com Subject: Re: inflatable torroid Date: 27 July 1999 06:11 Original Poster: Ed Phillips <evp-at-pacbell-dot-net> Guys: Why go to all this work when dryer duct is cheap, light in weight, and easy to use??????? Ed