Shelter Systems domes are not kits. You don't have to cut anything. You don't need any tools. Everything is in place and ready to assemble. All dome poles except the window poles are the same length, and interchangeable - every pole will go in every other position. All window poles are the same length. Only the most general directions are required (and are provided with each dome, of course). Most people can put up the 14, 18, and 20 in 30 minutes. Shelter Systems domes create multipurpose enclosures that are affordable, portable, reliable, windproof and watertight.