This is the 1 to 1.5 ton left hand 120/208/230v ECM blower module;The Unico System modular blowers are designed for use with the Unico System small-duct high-velocity (SDHV) system;The blowers exceed the U.S. Department of Energy requirements for SDHV systems requiring a minimum external static pressure of 1.2 inches of water (0.3 kPa) at the rated airflow when installed with the compatible Unico cooling module;All cooling modules are available in Heat Pump, Chilled Water and refrigerant air conditioning configurations;The control box comes with the setup software (ECMConfig) and a USB cable to connect to a personal computer running Windows 7 or 10 operating system;For Mac systems, it is sometimes possible to use a Windows emulator