What is the function of Aluminum dunnage racks？

Dunnage racks raise stored items off the ground to prevent damage to the items due to flooding or dirt. They also allow air to flow underneath the items and provide access for cleaning the floor beneath the racks. These single-level shelving units sit low to the ground and are used for storing perishable products such as food and medical supplies as well as finished goods that must be kept away from water and dirt that accumulates on floors.