Linkable Led Utility Shop Light From Ensenior, 4 Ft, 4400 High, Etl Certified. ?Premium Quality - Ensenior?s 5000K 4ft led shop light is ETL certified, with UL-Listed cords, built-in power source and high standard switch , thicker tubes to ensure long-lasting experience, offering you safer and more reliable procucts! ?Super Bright - Our 4 ft shop light can provide 4400 high lumens with only 36W. It is an amazing LED efficiency of 122 lm/w! Excellent replacement for old fluorescent lamps! Energy saving of up to 80%. ?Easy Installation - Plug Play. These 4FT led shop lights can be directly mounted to the ceiling or suspend from the ceiling in your garages, workshops, basements, etc. Quick and easy setup. ?Linkable - Up to 4 of these 4 shop light led can be connected together seamlessly with accessories provided. Daisy chain design and no additional wiring. ?Ensenior?s Promise - Our 4? led shop light has 5-year warranty and you can get 12-hour prompt after-sales response anytime!