History of Pet Flap
| Element | Description | Element Code | Essential | Uniclass 2015 | Updates |
|---|---|---|---|---|---|
| Pet Flap | A small flapped opening through an outfall or control gate designed to allow the migration of fish, eels or lamprey through the outfall structure. | PET | No | Pr_45_28_30_65 | 27-04-2021 |
| Pet Flap | A small flapped opening through an outfall or control gate designed to allow the migration of fish, eels or lamprey through the outfall structure. | PET | No | Pr_45_28_30_65 | 11-04-2023 |