http://bendalite.com/durafiber/durafiber.html sells some.
http://www.pacfabinc.com/product/products.htm go about a third of the way down the page.
I found a lot more by doing a "power search" at metacrawler.com , by far my favorite search engine.
Try the rope lights instead at www.outwater.com for 110v use, up to 150' on one circuit, indoors or out for only $1 per foot!!!
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