This configuration is ideal for small applications where space is a premium. The horizontal is low to the ground allowing you to install under existing ductwork or piping in a mechanical space. Utilizing the small scroll head technology allows us to go from 2HP to 10HP on this configuration. We are able to mount the desiccant dryers horizontal along the tank utilizing desiccant cartridges. This makes the 10HP Duplex the smallest footprint on the market for medical air package and a very economical option still complete with System Health.