MoonWall XL attaches to either the long (12ft) side or the short side (9ft) to increase shade and privacy in your outdoor space. The MoonWall XL folds up to fit easily inside the MoonShade XL carry bag, so you can keep your full MoonShade XL kit in one place. MoonWall XL works best for setups where the MoonShade XL is mounted at 8’ or higher. For setups shorter than 7’, we recommend the MoonWall Long . For more info, see FAQ . Find MoonWall Short here and the MoonWall Long here .