What is the primary purpose of metro racks in refrigeration?

The primary purpose of metro racks in refrigeration is to ensure proper air flow for food. These racks are designed to elevate food items off the floor of the refrigeration unit, allowing cold air to circulate around the products. This circulation helps maintain a consistent and safe temperature, preventing the growth of harmful bacteria and ensuring food safety. Proper air flow is crucial in refrigeration to evenly distribute cold air to all stored items, which helps preserve freshness and prevents spoilage.

While maximizing storage space is an important aspect of using racks, the key function in a refrigeration context is the facilitation of air flow to maintain food quality and safety. The other options, such as storing heavy equipment or organizing cleaning supplies, do not align with the primary role of these racks within a refrigeration setup.