The Vent-Bettina rotational ceiling fan is thoughtfully designed with its arms gently upward curving. The fan offers fluid lines and quiet axial rotation. The fan heads can be infinitely positioned in 180-degree arcs for optimum air movement; the greater the angles of the motors to the horizontal support rods (up or down), the faster the axial rotation. A slow, controlled axial rotation is achieved by both fan head position and fan blade speed.Made with moisture and humidity-resistant materials suitable for covered outdoor spaces such as patios, porches, or sunroomsQuiet operation with a soothing white-noise effectMatthews rotational fans circulate heat and air conditioning more efficiently than traditional paddle fansConstructed of cast aluminum, heavy spun and stamped steel, this fan carries a limited lifetime warranty.Each unique motor mount and fan head knob is made of genuine marbleized Bakelite.Decora-style fully variable wall switch in white.Standard Equipment: 10" Downrod. Additional downrod lengths are available and sold separately to achieve the optimal look and functionality for your spaceFlat ceiling canopy. Compatible with 29 Degree vaulted ceiling canopy. (Sold Separately)All Matthews Gerbar fans are hand made and not mass produced.Safety cages available for low ceiling applications (sold separately).Made in Brazil. Assembled and tested with care in the USA.Matthews Gerbar fans do not oscillate on their own. The fan heads can be pivoted to change the direction.Downrod(s) Included-10"Motor/Housing Finish-Matte BlackDownrod Diameter-3/4"Fan Wattage at High Speed-89.63WCFM (High)-2077CFM (Low)-1346Airflow Efficiency (CFM/Watt Average)-23Low RPM-699Noise Level-Soothing White NoiseCanopy Width-5.5”Canopy Depth-5.5”At Matthews, we recycle 95% of all damaged or unused materials, minimizing waste across our production process. Our shipping materials are made from molded pulp.Covered outdoor areas or bathrooms without direct water exposureCPSC - 15 U.S. Code 1278a CompliantNot recommended for coastal, saltwater and chlorine locationsAssembly RequiredDust with a dry soft cloth