Luceco T8 18W (1800 Lumen) 120-277v Ballast Bypass 4 Foot LED Light Tube, 4 Pack Ballast Bypass: Installation involves minimal re-wiring and eliminates annoying flicker, buzz, and inconsistent performance Energy Savings: Get the same illumination with a fraction of the power - saving you up to 60% over traditional fluorescents Superior Lighting: Continuous, even illumination across the tube with no hot or cold spots Improved Safety: UL-listed tube features frosted lens with shatterproof construction and stays cool when lit for safer, easier handling Consistent Performance: Instant-on illumination with no warm-up or wait time and crystal clear 4000k cool white color temperature