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Protects against backdraft and vermin entry. Bush fire compliant (BAL40) when fitted with ember-proof mesh.
Gravity louvred grille for external ventilation.
Model: Gravity Grille Range
Order Code: See technical data for further details
| Model | Code | Duct Size | A | B | C | D | E |
| GG100 | ALV204 | 100 | 150 | 150 | 95 | 50 | 20 |
| GG125 | ALV205 | 125 | 180 | 180 | 120 | 50 | 20 |
| GG150 | ALV206 | 150 | 180 | 180 | 145 | 60 | 20 |
| GG200 | ALV207 | 200 | 260 | 260 | 190 | 65 | 20 |
