The 'A' Series medium profile unit coolers are designed for larger walk-in coolers and freezers as well as warehouse cooler and freezer applications for product pull down and storage in commercial and industrial refrigeration markets. The 'A' Series unit coolers are constructed of a heavy gauge smooth finish aluminum cabinet with a copper tube, aluminum plate fin coil, and permanently lubricated ball bearing fan motors with inherent thermal protection. These draw through units are designed for ceiling mounting and are available in air defrost, electric defrost and hot gas defrost configurations.