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Technically, any LED tube T must be named with a number. Figure represents one-eighth inch in diameter, so we are most familiar one inch LED tube called T8 (eight times one-eighth inch), and the other some people still use the thicker
The standard tube is called T12. T12 means is that the diameter of fluorescent tube 12 / 8 inch, said that T12 is the thickness of LED in terms of its diameter is 1.5 inches.
T5 will be obvious meaning is the diameter of 0.625 inches of LED tubes.
หรือจะดูจากค่ามาตรฐานหน้าตัดของหลอดตามรูปด้านล่างนี้ก้อได้ครับ
