These 28w T8 4ft LED tube lights can illuminate your space with 3,500+ lumen with 270 degree angle beam for V shape design. This 4ft led is compatible with existing T8, T10, and T12 fluorescent fixtures. Like most of led, these dual end powered T8 4 foot LED light require a simple, energy-saving, ballast bypass (direct wire) installation. And this 4ft t8 led tube is designed with Dual row 192LEDs, which is much brighter than single row led. With a heavy heat-sink and shatterproof cover, our 4ft led light have an outstanding life rating of 50,000+ hours! These super bright bi-pin g13 4ft led are ideal for replacing fluorescent in your garage, warehouse, workshop and more. NOTE: Please install this item away from the radio, remote control door, etc., which may cause EMI.