This flush mount ceiling light from Access Lighting requires two 13-watt compact fluorescent bulbs.Bulb Base: GU-24 Bulb Type: Fluorescent Canopy Diameter: 9-3 4 Canopy Indentation: 1 Category Group: Flush Mounts Category Sub Group: Drum Shade Flush Mounts Certification: CETL Collection: Iron Diameter: 12 Energy Star: No Energy Star Compliant: Yes Finish: Brushed Steel Glass: Frosted Height: 4.00 Kelvin: 2700k Location: Damp Lumens Per Watt: 69.24 Material: Metal Number of Lights: 2 Shade Material: Glass Socket1 Max Wattage: 13 Socket1 Number Of Bulbs: 2 Style: Contemporary Total Nom Lumens: 1800Lm Voltage: 120 Wattage: 13 Width: 12