I have the same window as you and I purchased mine from Home Depot. Total price was $1300 and it was a pita. Kept giving me different excuses, took forever to get and had one guy call me and said that I don't have a perfect arch so it'll be more money. Look around and you'll find a better price else where. Sorry, I went with blackout blinds too for my projector room.
Edit: the blinds kick ass though and no matter how sunny it is, it's pure dark when the blinds are down.
Last edited by R!zz0; 04-23-2013 at 10:55 AM.
“Straight roads are for fast cars, turns are for fast drivers.”