Photography Backdrop

[bethsteve777]

Hello

Does anyone know how to locate a large white canvas backdrop for photography? So it looks like your item is sort of floating in a white background? And by large I mean 8.5' wide by 13' long. I've seen photographers use them but haven't been able to find out where they get them. 

I have a white polyester backdrop but it's too thin so it won't hang flat and is too sheer. 

A canvas one would be better because of the weight. 

Thanks for anything!!!

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