DuraVent 203739
Use for venting listed natural gas or liquid propane category I, draft hood appliances or appliances that have been specially tested and listed to use type B gas vent. The appliances listed typically use Type B gas vent systems, but not always, furnaces, water heaters, boilers, room heaters, decorative gas appliances and unit heaters.
| Material | : | Aluminum |
| Diameter | : | 3 in |
| Length | : | 18 in |