POWERFUL Royal Sovereign 13500 BTUs. It is a efficient dual hose system. Comes with both hoses, couplings and window attachment. On casters for easy movement. This is an excellent make, the Cadillac of ACs. MINT CONDITION. Google the make to check it out..Phone 613-852-3093 ( preferred ) or email flach.a@hotmail.com for more info. They can be tested at my house. I am in Blackburn Hamlet.