| Image | Supplier | Item Code | Short Description |
|---|---|---|---|
| | A Y MCDONALD MFG CO | AY 3129-378 | 30-AV AIR VOLUME CONTROL |
| | A Y MCDONALD MFG CO | AY 3129-379 | 80-AV AIR VOLUME CONTROL |
| | A Y MCDONALD MFG CO | AY 3129-380 | 120-AV AIR VOLUME CONTROL |
| | A Y MCDONALD MFG CO | AY 3129-386 | 100-AV AIR VOLUME CONTROL |
| | A Y MCDONALD MFG CO | AY 3129-388 | 42-AV AIR VOLUME CONTROL |
| | A Y MCDONALD MFG CO | AY 3129-389 | 45-AV AIR VOLUME CONTROL |
| Type | Diaphragm |
