From: Stephen G Stanton[SMTP:ulflyer-at-juno-dot-com] Sent: Monday, July 14, 1997 12:03 PM To: tesla-at-pupman-dot-com Subject: Re: toroid Roderick: Home Depot has 6" flex, maybe even larger. That "6" might really be a seven; it's been a few years since I built my cooler duct where I was using that. Heating and A/C contractor places should have the larger duct, probably up to 12" diameter. Stephen KJ6LH