Ledwholesalers Brightest 20 Watt 4 foot T8 T10 T12 LED Tube Lights, 45W Fluorescent Tube Replacement,warm white,1943WW No Flickering Instance Turn On No buzzing ballasts Hi Efficient Output (85-100 Lumen Per Watt) Save 60% power consumption comparing with the fluorescent light. Real replacement for the traditional T8 fluorescent light with no need maintain cost. Ideal for all energy saving application No buzzing ballasts Environment friendly no mercury or hazardous materials.