With availability for ammonia, Freon, CO2 and glycol systems, and capacities from 10 to 70TR, Model A+P is designed for cold storage warehouses and food processing plants. The roof-mounted, insulated penthouse air cooler includes a structural steel frame capable of withstanding 90 mph winds, full-height access doors with interior LED lighting and grating over each fan, a PVC roof membrane, tubeaxial fans, and a standard shipping size that fits on a step-deck flatbed. Other interior features include 120 VAC service outlets on both sides of the coil, door heat trace and interlock, and recessed fans and motors below the grating. Ammonia or carbon dioxide detectors can be installed as an option. It can be provided as a complete unit, as a coil, base, fans and structural frame unit, or as a coil with drainpan and legs only.