The Xtreme 16 Wall Mount Fan has a unique orbital rotation different than any other fan. Its rotational up, down, and sideways pattern simulates more natural air and wind movement, while providing optimal air circulation throughout your growing environment. The Xtreme 16 Wall Mount Fan is not only great for cooling and air movement, but is is also ideal for CO2 disbursement. 3 Adjustable Speeds Up & Down Oval Oscillation (figure 8 pattern) Quiet Operation Energy Efficient Motor Easy Assembly Come Apart for Easy Cleaning 1 Year Warranty