Type
Height of shield
Height of tube body
Tube examples
Mounting centers
7G-46
46mm
31±3mm
6AK5,6AL5,5654
22.5mm
2-Φ3.5mm
7G-55
55mm
40±3mm/38±3mm
6AU6,EF94,6BH6
7G-60
60mm
45±3mm
7G-75
75mm
60±3mm
Colour
White
Blue
Yellow
Red
Black