... ,18W,20W,27W,28W,30W, 4.Patent product. T5 28W fluorescent lamp Item description:1>Material: light source, control board, adapter, ... .5*28.5mmLuminous Flux: 2800LmFeature:1.Replace the T8 fluorescent lamp directly and energy saving up to 63%, immediate return ... different adapter structure can moistureproof, dustproof and better for circuit board heat dissipation5.easy to install.6.Low temperature start ...