12,000 BTU Mitsubishi split ductless Air Conditioner Condenser. This unit will cool about 400 square feet. Seer rating of 20.5 (efficiency). Model number MUYGE12NA purchased through GODUCTLESS.com we made an error and ordered 2 units when we only needed one, it is still in the original shipping crate! The inside portion (evaporator unit) will need to be purchased seperately from the website mentioned above. The homeowner can install these units themselves complete instructions. If you need me to help instal the unit we can negotiate that as well.