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| Model | : | 318 |
| Size | : | 20 x 20 x 16 in |
| Vent Duct Shape | : | Square to Round |
Gray Metal Funnel Pan, 318 Model, 20 x 20 x 16 in Size, Square to Round Vent Duct
- Equivalent length in supply 35 ft, return equivalent length 10 ft