Product DescriptionSpecifications:●Style: Reverse invisible crystal ceiling fan●Size: fan width 42 inch, lampshade diameter 19inch, height 17 inch( with 4 inch downrod). Comes with 4 inch and 8 inch rod.●Material: metal, acrylic, crystal●Light type: LED chip (Included)●Motor: pure copper motor●Switch: remote control (Included)●Speed: 6 speeds●Two way rotating: forward and reverse●Light color: 3 regular colors(cool light 6500K, neutral light 4500K, warm light 3000K)●3 Timing setting:1/4/8 hours●Voltage: 110V●Wattage: 36W●Applicable area: 161-268 sq.ft Living room,Dining room,Study room,Bedroom,Restaurant,Office etc.Note:●The boom has two lengths(4 / 8 inch) for choosing, depending on your actual situation.●Floor height is greater than 102 inches, ceiling load greater than 40kg.●This fan needs basic assembly skill, professional would be highly recommended.● The bracket size is 5.9", if it's larger than your electric box, you can let your electrician provide a universal crossbar plate or drill 2 closer holes on the bracket to fit it.