I ordered from the factory, window treatments that matched the rest of the trailer. Both the valance and blinds. IIRC, I used the size from the bedroom using the material in the living room.
And if you look at the pictures in this link, you can see that I should have requested that they be made 2" taller.
//heartlandowners.org/showthread.php/11365-And-so-it-begins?p=123839&highlight=window#post123839