Selkirk 243036 Pellet Stove Vent Pipe, 3" x 3'Selkirk VP Pellet Pipe straight length pipe can be used in vertical and horizontal installations and features proven gasketed coupling joints that connect in seconds to assure joint integrity. Constructed of 304 stainless steel inner wall and paintable galvanized outer wall. Internal spacing bead assures uniform insulating air space between pipe walls, and allows for 3" clearance to combustible materials. Male end is rolled over eliminating sharp