1.No any dark area 2.Oval-Shaped/ Round shape are available 3.Stable Isolated or Non-Isolated driver

T8 Oval-Shaped/ Round  SMD 3528 Isolated driver AC85-265V

Power Consumption:	9W
Input voltage:	AC85-265V
LED Quantity:	144pcsSMD3528
Luminous flux:	800lm
3M illuminence	≥ 40 Lux
Color temperature:	3000K-3500K / 4000-4500K / 6500-7000K
CRI:	≥70
Tube Material:	Alu Housing &Transparent/Frosted PC cover
Dimension (without pins):	26*588mm
Packing size:	66.7*22*24CM (30pcs/box)