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Description
Holt 'O' Ring Hatch without a rubber seal.
Hatch 145 mm Properties
| Fixing Hole | 3 mm |
| Cut Out Size | 157 mm |
| Opening Size | 145 mm |
| O Ring Required | HT.538 |
| Weight | 111 g |
The Holt HT.538 Sealing Ring can be found HERE
Hatch 100 mm Properties
| Fixing Hole | 3 mm |
| Cut Out Size | 110 mm |
| Opening Size | 100 mm |
| O Ring Required | HT.338 |
| Weight | 62 g |
The Holt HT.338 Sealing Ring can be found HERE
