The Haier Thermocool HT CAC Cassette 3HP AB25FH2QAA R410A, Ceiling Commercial Air Conditioner is a ceiling air conditioner that has a shutter that opens and closes effortlessly for air to pass through when it is switched on. The shutter has other functions which include protecting the air conditioner from dust particles. This product is equipped to evenly cool or heats up a multitude of commercial environment such as offices, meeting rooms, etc. This product is highly efficient and reliable.