Each floor of the USA system is equipped with two nests, two flat chain feed lines, two drinking lines, one line of LED lights, and two egg belts. Nests are positioned in the center of the colony, enclosed by removable curtains for privacy. The egg channel is covered by wire mesh and is considered usable area. Manure belts are located on all tiers. Perches double as guard rails to protect the system. Available in multi-tier configurations with intermediate catwalks.