| Product Code | Description | Diameter Metric | Diameter Imperial |
| QZD624V | 150 Dia 24 Volt Motorised Zone Damper | 150 | 6 |
| QZD6240V | 150 Dia 240 Volt Motorised Zone Damper | 150 | 6 |
| QZD824V | 200 Dia 24 Volt Motorised Zone Damper | 200 | 8 |
| QZD8240V | 200 Dia 240 Volt Motorised Zone Damper | 200 | 8 |
| QZD1024V | 250 Dia 24 Volt Motorised Zone Damper | 250 | 10 |
| QZD10240V | 250 Dia 240 Volt Motorised Zone Damper | 250 | 10 |
| QZD1224V | 300 Dia 24 Volt Motorised Zone Damper | 300 | 12 |
| QZD12240V | 300 Dia 240 Volt Motorised Zone Damper | 300 | 12 |
| QZD1424V | 350 Dia 24 Volt Motorised Zone Damper | 350 | 14 |
| QZD14240V | 350 Dia 240 Volt Motorised Zone Damper | 350 | 14 |
| QZD1624V | 400 Dia 24 Volt Motorised Zone Damper | 400 | 16 |
| QZD16240V | 400 Dia 240 Volt Motorised Zone Damper | 400 | 16 |
| QZD1824V | 450 Dia 24 Volt Motorised Zone Damper | 450 | 18 |
| QZD18240V | 450 Dia 240 Volt Motorised Zone Damper | 450 | 18 |