These carousels are the VLMs older cousin and still have a home in small parts distribution applications. The typical limitation with these units are height and the need for product size uniformity. Like VLMs these units can be paired for tandem picking and can have pick lists electronically sent to them for processing. Carousels are great up to about 18’ tall. Beyond that height it becomes more costly per cubic foot of storage than a VLM and proportionately slower with height. Combinations of carousels and VLMs are often the right solution when a large variety of part shapes and sizes are to be stored.