You didn't say what you were looking for. However, you might try http://www.carlofet.com/ They have blackout cloth that you can buy by the foot that will work. While it isn't on their web site, they also stock other materials. Send them an e mail and ask-they'll send samples. I build a 131" 2.4:1 screen using white blackout cloth, and the material was about $62 with a pretty generous margin that I trimed. They also filled the order and answered their e-mails promptly.
Thanks for the response. I honestly don't really know what I want....I was given an old outdoor screen that I cut down to size but it has a terrible glare or bright spot to it when the scene is light or white. I have great light control in the basement and I have an Epson 8700. Any suggestions?