Benchmark by Viribright LED T8,  4' (4-foot) Standard Brightness, Dual End Powered 20W 1200 Lumen 2800K Warm White (Replaces 36W Fluorescent T8) T12 Retrofit Saves on average 50% over fluorescent (Ballast Removed) Cost Competative, Shatter Resistant design, Instant-on lighting. Cool to touch safe energy saving power source, with long lasting life 2800K Warm (Soft White) (1200 Lumens) &gt;80 CRI for higher quality of light cULus Certfied (IFAR) UL1598/1598c as a fluorescent retrofit Patented Dual Redundant Safety Switches enables lower cost retrofit Thermal plastic outer shell safe for food service applications ASABE Qualified LDL Listed for rebates