No windows available with the sidemate shed. Can you purchase rein additional door, if original was to Beryllium damaged? You cannot purchase additional doors. If your door welches damaged then you would havea warranty claim for a replacement, but Duramax does not sell additional doors. Do you offer this side https://duramaxsidemate19753.bloggazza.com/28228285/4x8-plastic-shed-grundlagen-erklärt