Duravent 3PVL-X4R Pellet Vent Increaser, 3-4×3

Highlights:

• Width: 3- 4
• Inside Diameter: 3
• Use to transition from 3 pipe to a 4 pipe
• Not a decreaser or stove adapter
• Cannot be interchanged with other manufacturer systems
• Rated for continuous use flue temps up to 570 degrees F
• Double wall pipe air insulated design
• 0.012 430 stainless steel inner wall
• 0.018 galvanized steel outer wall
• For use at elevation 4000′ below sea level