Duravent 3PVL-X4R Pellet Vent Increaser, 3"-4"x3" Stair Engineered for fixed installation

Engineered for fixed installation

Command(TM) Products are fast and easy to hang

Nylon barrier adds strength and helps retain air

audio visual installations

Use in line with potable and non-potable water

Duravent 3PVL-X4R Pellet Vent Increaser, 3"-4"x3" Stair Engineered for fixed installationHighlights: 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