Nice shed....some of the screws don't tighten, but not a problem. I put a little glue in and that takes care of it. I scratched windows and Lifetime replaced windows, no charge. Also, a few of the diagrams are not correct (ex. window brackets are shown to be mounted backwards.) I suggest to Lifetime to make floor material harder, as my chair legs have put indents in the floor ( I work in shed and sit at a table). Most difficult assembly was inserting the corner wall pieces. A little manipulation and wiggling solves most assembly issues. There are small spaces where walls go into floors and a few other places... I don't like bugs coming in, so i filled in with soft  calking. Also, Lifetime should consider a option of skylight fan pulling out or in fresh air as it does get warm in shed if one works there as I do.