When ordering wallpaper, people often get confused because of how it's packaged. Every wallpaper manufacturer packages their product in double roll bolts. A bolt is the same thing as a double roll.  A Double Roll is Two continuous Single Rolls. We sell by the Single Roll and will cut a Double Roll into a Single Roll if needed. Two Single Rolls is equal to One Double Roll. It can be confusing, so please contact us with questions.  We will be more than happy to help your figure your wallpaper needs!