*BUY MORE THEN ONE GETS FREE PRIORITY SHIPPING*CFL Ballast, Ballast Type Electronic, Ballast Family SmartMate(R), Input Watts 18, Ballast Voltage 120/277, Min. Starting Temp. 0 Degrees F, Ballast Start Type Rapid, Ballast Max. Number of Lamps 2, Ballast Lamp Type Compact Fluorescent, Ballast Max. Lamp Watts 21, Dimension Reference A38, Base Type 4 Pin, Ballast Dimming No, Length 4-1/5 In., Ballast Dimming Type No Dimming, Width 2-2/5 In., Height 1 In., Light Output Normal, Special Features Dual ConnectorFeaturesHeight: 1"Ballast Max. Lamp Watts: 21Ballast Type: ElectronicNumber of F18BX Lamps: 1 or 2Light Output: NormalSpecial Features: Dual ConnectorInput Watts: 18Ballast Max. Number of Lamps: 2Ballast Family: SmartMate(R)Ballast Item: CFL BallastBase Type: 4 PinBallast Start Type: RapidItem: CFL BallastGreen Environmental Attribute: Product Contributes To Reducing Energy ConsumptionBallast Dimming Type: No DimmingBallast Voltage: 120/277Dimension Reference: A38Length: 4-1/5"Width: 2-2/5"Ballast Dimming: NoMin. Starting Temp.: 0 Degrees FBallast Lamp Type: Compact FluorescentItem Type: CFL BallastBrand: PHILIPS ADVANCEManufacturer Part Number: ICF-2S18-H1-LD-K