I have a mid 90's Hot Spring Classic spa that the light lens needs to be replaced anyone know the telephone number to Hot Spring and the part number? Any help would be greatly appreciated.

Hot spring won't send it directly to you. You can get it from your closest dealer or I can send you the lens and the adhesive which fits into a standard caulking gun. Send me a private message with your info if you want me to send it to you.

Dan please provide a link if you've got one, to where I can get the older style large hot springs lenses (and adhesive). Otherwise send me a pm.

Thanks.

flat, or curved?

Curved, use current. Flat is the only other old style available, and that's really, really old. Adhesive is just DEVCON, no longer permalite.