According to Arento telephone duct specification T.C 161A
|
Nominal Size (mm) |
Outside Diameter |
Wall Thickness |
Socket Depth (mm) |
||
|
(S) |
Tolerance |
(S) |
Tolerance |
||
|
50 |
50 |
0.2 |
1.6 |
0.4 |
80 |
|
110 |
110 |
0.3 |
3.2 |
0.6 |
170 |
