This Burnham Commercial assembly unit is a combination of a protective covering and an air circulation device. The protective covering, often referred to as a canopy, is designed to shield the internal components of the unit from external elements such as dust, debris, and weather conditions. It is typically made from durable materials to ensure longevity and reliability. The air circulation device, commonly known as a blower, functions by moving air at a high velocity. This component is essential in maintaining optimal operating temperatures within the unit by facilitating efficient heat dissipation. Both components are integral parts of the assembly unit and are designed to work together to ensure the overall functionality and efficiency of the system.