Satco S4370 13W Triple Tube 4-Pin Gx24Q-1 Plug-In Base 3000K Fluorescent Bulb Shape: Triple Tube 4-Pin For Electronic & Dimming Ballasts Plug-In Watts: 13W Base: Gx24Q-1 Luminous Flux: 900Lm Color Temperature: 3000K Maximum Overall Length: 4.2 Inch