About this item Super Bright - 4FT led shop lights feature 4400 lumens brightness at 5000K Daylight White by using only 42W. That is a staggering LED Efficiency of 105 lm/w! Excellent replacement of conventional fluorescent fixture. Energy Savings of up to 75%. High Quality - ETL certified for better quality, safety and reliability. This long-lasting LED shop light provides up to 50,000 hours of light before any maintenance is design — no plastic cover to block light or trap heat. Linkable - 4ft linkable led shop light use plug connection to connect up to 6 pcs together in your garages, workshops, workbench areas, storage areas, warehouses, basements, equipment rooms, etc. Easy Installation - Plug & Play. You can hanging it with the included hanging chains or directly mounted to the ceiling with the included mounting screws. "