Carlow Manufacturing work 5 days a week and 50 weeks per year. They are moving to kanbans to standardise production. Determine the size of the kanban size required for their sub-assemblies and the number of kanbans needed from the following information:

Setup cost = 30.00

Annual holding cost = 120.00 per sub-assembly

Daily production = 20 sub-assemblies

Annual Usage = 2, 500 sub-assemblies

Lead time = 16 days

Safety stock = 4 days production