503 Series — Three Way with Multi-Shutter Damper
- Three-way, stamped curved blade
- 9/16" fin spacing
- Bright White enamel finish
| Model | Material | Damper |
|---|---|---|
| 503M | Steel | MS |
| A503M | Aluminum | MS |
| Model | Material | Damper |
|---|---|---|
| 503M | Steel | MS |
| A503M | Aluminum | MS |