Designed of brushed standard grade stainless steel, the PK22 built-in range hood has some remarkable qualities! The first and only range hood using the iQ Blower System™ which runs up to 2X quieter, clears smoke & odors up to 30% faster, and is up to 22X more energy efficient than other blowers in its class - and all at less than a mere 0.6 sones on normal speed! You enjoy a range hood that, for the first time ever, actually performs at the rated CFM. This is achieved through the use of GPS Technology that checks the ducting and airflow to ensure the ventilation is what you expect. It will also tell you if the airflow is impeded so your installer can make the correction right away. The use of an optional cabinet liner, allows for flexible installation and design options so your new power pack will be a perfect fit with your environment.