IBFL500 flame-retardant, antibacterial 6 ft (1.8 m) long stretchers are placed underneath patient and hydraulically lifted inches from bed for weighing. Feature locking casters, adjustable weighing arm, and American-made steel construction. ZERO key allows staff to easily subtract the weight of bedding for accurate patient measurement. Six AA alkaline batteries (not included) or optional AC adapter. Not for transport. EMR/EHR ready. 500 lb x 0.1 lb / 225 kg x 0.1 kg capacity. UNSPSC#42182800