The Bianca is the simplest designed fan and is identical to the Bermuda except it does not have the ceiling cowling and short brass stem. The Bianca attaches directly to the ceiling and is also called my hugger fan because of its low profile. The Globe unscrews and can be exchanged for any of the several styles shown below. The bulb is a bi-pin GOR and is easily replaced. The blade diameter is 3.625 and 1.38" in height.. Installs with your regular 12 volt system; minimal additional wiring is needed for the working part of the fan. Instructions are included. Fan speed is adjustable.