13.5-watt EarthBulb LED linear tube is available in 4000K and 5000K with 300-degree beam angle. Great light output and perfect for replacement of T8 fluorescent tubes. This linear tube provides 1800 lumens and has a CRI of 82. This lamp is engineered for high lumen maintenance over its 50,000 hour rated life and exceeds the requirements for DLC. Simply “plug and play” on Instant Start electronic fluorescent ballasts.