A Multi-Tiered Enclosure is a grouping of lean-to and skylight enclosure products and allows for far greater spans. We can also build systems that have several of each for even greater spans. The perimeter structural steel sub-structure band where the enclosures attach are to be installed by the client. It is often steel with a LVL facing. The skylight systems normally require custom built motor systems designed and built by Roll-A-Cover. The enclosure systems may require a 3/12 pitch or greater based on the final design and load requirements. This design allows for a 34′ wide skylight and 2- lean-to systems with depths of 22′ for a total width of 78-80′. The length can go several hundred feet with a custom design layout.