4 x 1 1/4" Grooved, Concentric Reducer, UL Listed, FM Approved, LPCB and VdS

4" X 3 1/2" Grooved, Concentric Reducer, UL Listed, FM Approved, LPCB and VdS

2 1/2" X 2" Concentric Reducer, Grooved x Threaded, UL Listed and FM Approved

3" X 1 1/2" Concentric Reducer, Grooved x Threaded, UL Listed and FM Approved

2" X 1 1/2" Concentric Reducer, Grooved, Galvanized, UL Listed, FM Approved, LPCB and VdS

3" X 1" Concentric Reducer, Grooved x Threaded, UL Listed and FM Approved