Duravent 3PVL-X4R Pellet Vent Increaser, 3"-4"x3" Stair Command(TM) Products are fast and

Command(TM) Products are fast and easy to hang

Design & Construction

For use in keeping large

These screws are made from a highly weather-resistant stainless steel providing the ultimate protection against rust and corrosion

Galvanized outer wall

Duravent 3PVL-X4R Pellet Vent Increaser, 3"-4"x3" Stair Command(TM) Products are fast andHighlights: 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 Warning: This product can expose you to chemicals including