Most frequently paired with Type 20 to give a 90° corner joint for the middle rail of guardrail and other rectangular structures. The upright passes through the fitting.
Nominal Pipe Size
inches
lbs
Type
A
B
C
D
E
F
G
H
21-4
1/2"
1.34
0.31
21-5
3/4"
1.61
0.62
21-6
1"
1.81
0.90
21-7
1 1/4"
2.36
1.52
21-8
1 1/2"
2.68
1.87
21-9
2"
3.35
3.00
