A row of commercial air conditioning units lines the exterior of a building

A row of commercial air conditioning units lines the exterior of a building. The units are stacked, some with four fans in a square arrangement, others with two fans. They sit on metal frames under the building's overhang, spaced between concrete pillars. The building's exterior is light gray, and the ground is paved with a geometric pattern. The sky is overcast, casting a muted light on the scene.