I have had my lifetime shed for several years now and have been very happy with it.  Just last week I noticed a crack in the left front corner panel right in the fold that makes the 90 degree corner.  I called Lifetime to see if I could order a replacement panel.  Not only did they promptly order me a new panel, but they covered it under their warranty!  The whole process took only five minutes on the phone!  I couldn't be happier with their  service and warranty.