Flashings are used to seal the opening where the venting penetrates the roof and to divert rain and snow down from the roof and away from the pellet pipe system. It is important to choose flashing that matches the pitch of your roof. This flashing works for 0 12 to 6 12 pitch. The VP Collection features proven coupling joint connects in seconds to assure joint integrity, gasketed joint design, painted pipe lengths available for interior use. The rolled-over male end eliminates sharp edges, and internal spacing bead assures uniform insulating air space between pipe walls. VP pellet pipe works for pellet or corn burning stoves approved for use with PL-Vent. The appliance's flue gases must not exceed 570°F and the pipe is UL Listed to ULC S609, ULC ORD C441 and UL 641.Gasketed joint design Internal spacing bead assures uniform insulating airspaceBase Length: 13-5 8 Base Width: 11-1 4 Clearance: 1 to combustibles Collection: VP Finish: Galvanized Fuel Type: Pellet Height: 4 Inside Diameter: 3-5 8 Material: Galvanized Steel Pipe Class: Type L Pipe Inside Diameter: 3 Pipe Shape: Round Pitch: 0 12 - 6 12 Temperature: 570 degrees F UL Listed: Yes Vent Construction: Double Wall