Used where the vent passes through a roof. Flat to 6/12. A = 4". C = 3-1/2" minimum flange dimension. Size refers to the inside diameter of the pipe or fitting. The outside diameter of RV is approximately 1/2" larger. Type B gas vent.
| Size | 4" |
| A Size | 4-1/2" |
| B Size | 16" |
| C Size | 13-1/4" |
| D Size | 7-3/4" |
| Material | Aluminum/Steel |
| Temperature Range | 550 F |
| Grade | UL Listed |
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