Designed for horizontal installations only. For more venting information, have a look at: Pages Related to Pellet Stove Venting. 4″ inch, 4VP-90 Degree, Elbow, Type L Pellet Vent 3″ inch clearance to combustibles Inner wall is constructed from stainless steel and the outer wall is paintable galvanized Rolled-over male end eliminates sharp edges $239.99. I also have 3" venting for testing other pellet stoves. Most pellet stoves have 3 inch vent sizes. Free shipping. Pellet Stove Pipe 4 Inch PelletVent Pro (60) Product Type. This kit includes one 4" inch horizontal cap, one 4" inch 90 degree elbow, one 4" inch wall bracket, five 4" x 1' pipe lengths, one 4" inch tee with cleanout, one 4" inch wall thimble, one 4" inch tee support, one 3" to 4" pellet increaser, and one 3" inch pipe connector. Buy 4" Basement Pellet Vent Kit - Model 14126 from Walmart Canada. My prefab chimney for my wood stove is 8 inch. })(window,document,'script','//www.google-analytics.com/analytics.js','ga'); Simpson Duravent Pellet Stove Square Horizontal Vent Simpson Duravent Pellet Stove Square Horizontal Vent 18. Selkirk pellet vent pipe features a double wall design with a 1/4" air space and requires a 1" clearance to combustible materials.