TO PREVENT INJURY, READ AND UNDERSTAND THE GREENHOUSE ASSEMBLY INSTRUCTIONS BEFORE USE. Notes: 1. It takes about 1-2 hours to assemble the greenhouse by 2-3 persons. 2.The UV-protected side of the sheet is covered with opal white film and must face towards the sun. 3.Remove approximately 2 inches of film from all sheet edges before installing.Removing all film immediately after the construction is completed 4.Make sure the greenhouse is located on a flat, level surface.