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 motor 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 motor head position and fan blade speed.Matthews rotational fans circulate heat and air conditioning more efficiently than traditional paddle fans. Constructed of cast aluminum, heavy spun and stamped steel, the Bettina carries a limited lifetime warranty. Each unique motor mount and fan head knob is made genuine marbleized Bakelite. The Bettina is available with the following blade options:Metal fan heads with decorative metal blade guardsSolid, ecologically harvested Brazilian mahogany fan heads without blade guardsMetal fan heads with metal safety cages for use in low ceiling applications (7 ft in US / 8.2 ft in Canada)Specs42" Rotational Ceiling Fan- High Gauge Steel, Metal Blades, HandmadeBrand: MatthewsStyle: Contemporary, TransitionalCollection Name: Vent BettinaBlade Pitch: 31 DegreesWidth/Dia.: 42"Height: 7" Plus DownrodDownrod Included: 10"Available Rod Lengths: 5", 10", 20", 30", 48", 72"Location Rating: All models are Interior/Exterior Damp (for covered outdoor location) except for the following which are Interior only: VB-CR-MTL, VB-BN-MTL, VB-BZ-MTLCFM: 3200.96Watts: 272.40CFM/Watts 11.75Amps: 4.0Motor Speeds: Fully VariableMotor Type ACControl Type: Wall Control120 V Safety Rating UL, CULWarranty: Limited Lifetime