Air Grilles for HVAC Systems
Plastic Neck Adaptor
| Item # | Nominal Neck Size (mm/inch) | Spigot Size (mm/inch) |
| 431056 | 230x230 / 9x9 | Ø150 / Ø6 |
| 431057 | 230x230 / 9x9 | Ø200 / Ø8 |
| 431058 | 300x300 / 12x12 | Ø200 / Ø8 |
| 431059 | 300x300 / 12x12 | Ø250 / Ø10 |
| 431060 | 300x300 / 12x12 | Ø300 / Ø12 |
| 431061 | 350x350 / 14x14 | Ø300 / Ø12 |
| 431062 | 350x350 / 14x14 | Ø350 / Ø14 |
| 431073 | 350x350 / 14x14 | Ø400 / Ø16 |
| 431089 | 350x525 / 14x21 | Ø400 / Ø24 |
| 431090 | 350x525 / 14x21 | Ø450 / Ø26 |
| 431063 | 400x400 / 16x16 | Ø350 / Ø14 |
| 431064 | 400x400 / 16x16 | Ø400 / Ø16 |
| 431065 | 450x450 / 18x18 | Ø400 / Ø16 |
| 431066 | 450x450 / 18x18 | Ø450 / Ø18 |
Plastic Neck Adaptor - Butterfly
| Item # | Nominal Neck Size (mm/inch) | Spigot Size (mm/inch) |
| 431067 | 230x230 / 9x9 | Ø150 / Ø6 |
| 431068 | 230x230 / 9x9 | Ø200 / Ø8 |
| 431069 | 300x300 / 12x12 | Ø200 / Ø8 |
| 431070 | 300x300 / 12x12 | Ø250 / Ø10 |
| 431071 | 350x350 / 14x14 | Ø300 / Ø12 |
