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TYPE BC MANHOLE COVER
Nominal size
L1
B1
L2
B2
L3
B3
S
Fastener
Weight
D.
Qty
600×600
620
620
680
680
740
740
10
M20
28
67.1
12
75.3
14
83.5
16
91.7
18
99.9
20
108.1
22
116.3
24
124.5