The MRCOOL DIY 4th Gen Ceiling Cassette Mini Splits are ductless air conditioning systems designed to be installed in the ceiling of a room or space. It is part of the MRCOOL DIY 4th Generation series, which is designed for easy installation and energy-efficient performance. The system comes with everything needed for installation, including a pre-charged refrigerant line and communication wires, and can be installed using basic hand tools. The system features a sleek and modern design, with a slim cassette unit that fits seamlessly into the ceiling. It is equipped with an Inverter-driven compressor that adjusts the cooling output based on the temperature needs of the room, ensuring energy-efficient performance. The system also features Wi-Fi connectivity, allowing users to control and monitor the system remotely through a smartphone app. The MRCOOL DIY 4th Gen Ceiling Cassette Mini Split is a popular choice for homeowners and businesses looking for a discreet and efficient cooling solution that does not take up wall space.