25pcs led light tubes 4ft 60w ,flat 3 row 288pcs led chips,led replacement bulbs for 4 foot fluorescent fixture,warehouse shop light

4-row leds give high output 12500lumens v shaped 270 degree glowing lighting instant on, mercury no health hazard long lifespan: >50,000h t8 4foot type b led light bulbs are dual-end powered and require a simple, energy-saving, remove ballast installation. refer to our installation guide for details. t8 4ft led light tubes are ideal replacements for t8 t10 t12 led fluorescent bulbs. they are compatible with existing t8, t10, and t12 fluorescent fixtures, making led conversion easier than ever..syi