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| Brand | Trane |
|---|---|
| Type | Ductulator |
| Item Diameter | 8.5 in |
| Items Included | Ductulator slide rule |
| Model | Ductulator I-P and SI Units |
| MPN | U.S. Patent No. 2,887,509 |
| Material | Plastic |
| Item Length | 11 in |
| Item Width | 8.5 in |