led tube specification model size diameter length power T8 T5
"T" stands for "Tube", which means tubular, and the number after T means the diameter of the tube. T8 has 8 "Ts", and one "T" is 1/8 inch.
One inch is equal to 25.4 millimeters. Then each "T" is 25.4÷8=3.175mm
The diameter of the T12led tube is (12/8)×25.4=38.1 mm
The diameter of the T10led tube is (10/8)×25.4=31.8mm
The diameter of the T8led tube is (8/8)×25.4=25.4mm [T8 is exactly one inch in diameter] (Note: uniform width 39mm, height 52mm)
Common fluorescent lamp length and power: (20w length 620mm; 30w length 926mm; 40w length 1230mm)
The diameter of the T5led tube is (5/8)×25.4＝16 mm (Note: uniform width 23.5mm, height 39mm)
Common fluorescent lamp length and power: (8w length 310mm; 14w length 570mm; 21w length 870.5mm; 28w length 1170.5mm; 35w length 1475mm)
The diameter of the T4led tube is (4/8)×25.4=12.7 mm (Note: uniform width 21mm, height 32mm)
The length and power of commonly used led fluorescent lamps: (8w length 341mm; 12w length 443mm; 16w length 487mm; 20w length 534mm; 22w length 734mm; 24w length 874mm; 26w length 1025mm; 28w length 1172mm)
The diameter of the T3.5 tube is (3.5/8)×25.4=11.1 mm
The diameter of the T2 tube is (2/8)×25.4=6.4 mm
