LED Lamp, 13W, 120-277V, Bulb: T8, Length: 48", Base: Medium Bi-Pin (G13), Lumens: 1650, CRI: 82, Color Temperature: 3500K (Warm White), Rated Life: Up to 50,000 Hrs. NOTE: Must remove or bypass ballast. Replace shunted lamp holder with non-shunted one if applicable (Instant Start)