This is a premium, wall-mounted LG inverter air conditioner available in capacities ranging from 1.0HP to 2.5HP. It features a 5-star energy rating for high efficiency and uses inverter technology for optimized cooling and energy savings. The "Dual" likely refers to a dual inverter compressor for even better performance and reliability. This product offers energy-efficient and powerful cooling for residential or commercial spaces, with the convenience of wall-mounted installation.