Heavy duty cast construction. Complies with most Australian Survey Standards. Supplied complete with cast alloy opening key.
| BLA Code | Outside Dia. mm | Inside Dia. mm | Cut Out mm | Intrusion mm | Protrusion mm |
|---|---|---|---|---|---|
| 174308 | 140 | 95 | 108 | 17 | 5 |
| 174328 | 208 | 145 | 159 | 22 | 5 |
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