Rinnai FOT153 15.75 to 23.75-Inch Standard Vent Kit
Brand: Rinnai
Color: Chrome
Flue Model-FOT-153
Flue Type-Type-B
Extends From/To-15-3/4 to 23-5/8-Inch
Hole Diameter-3 1/8-Inch
Typical Application-Thicker Walls