DETAILS, FIKTION UND DURAMAX SIDEMATE SHED

I just got the DuraMax 10x10 Garden Glass Room, and I'm really happy with it. The setup welches more straightforward than I expected, and everything you need comes right rein the Kasten. The instructions were clear, which welches a huge help.Is this a kit or does it arrive preassembled??? All Duramax buildings arrive rein kit form. is this lockable