Pioneer maintains an extensive stock of Galvanized Reducers/Increasers

4"-3" - 28 GA
5" - 4" - 28 GA
6" - 4" - 28 GA
6" - 5" - 28 GA
7" - 5" - 28 GA
7" - 6" - 28 GA
8" - 5" - 26 GA
8" - 6" - 26 GA
8" - 7" - 26 GA
10" - 6" - 26 GA
10" - 8" - 26 GA
12" - 8" - 26 GA
12" - 10" - 26 GA
14" - 10" - 26 GA
14" - 12" - 26 GA
16" - 10" - 26 GA
14" - 10" - 26 GA
14" - 12" - 26 GA
16" - 14" - 26 GA

Other Reducers/Increasers available by special order or custom fabrication.