| Part NO. | Size A | Size B | Size C | Size D | Size E | Size F | Size G | |
| mm | mm | mm | mm | mm | mm | mm | ||
![]() Size A Cover Diameter Size B Clear Opening of Manhole Cover Size C Frame Outer Diameter Size D Depth of Insertion Size E Depth of Frame Size F Inspection Cover Diameter Size G Clear Opening of Inspection Cover |
ON-D400-CO900-H300 | 977 | 900 | 1070 | 55 | 100 | 350 | 300 |
| ON-C250-CO900-H300 | 977 | 900 | 1070 | 55 | 100 | 350 | 300 |