The Cultivator Elite™ Lean-To models are attached to an existing structure, such as your house or garage. The lean-to allows you direct access to your greenhouse from that building. So, regardless of the weather conditions, you'll have direct access to your greenhouse without going outside. You also have a great view of your plants from your home year-round. Having the greenhouse attached gives you easier access to utilities such as gas lines, plumbing, and electricity.