Duravent 3PVL-X4R Pellet Vent Increaser, 3"-4"x3" Lacquer Excellent for all interior and

Excellent for all interior and exterior vinyl

Wireless - runs on 4 "AA" batteries

tapas and anything else small

Recommended Surface Type: Leather/Rubber/Vinyl

Lock and go

Duravent 3PVL-X4R Pellet Vent Increaser, 3"-4"x3" Lacquer Excellent for all interior 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