| - | Features |
|---|---|
| #1 | Rugged double-wall pipe, 28 GA galvanized steel outer, aluminum inner |
| #2 | Locktab design for secure connections and no sheet metal screws needed |
| #3 | Not compatible with other brands within the same installation and unless using either the Selkirk # 108080 female pipe adapter or # 108081 male pipe adapter |