The Duravent 3PVP-SC is a Storm Collar 3" from the Duravent PelletVent Pro line, 3 inch diameter. Storm collar that sits above the roof flashing and sheds water away from the pipe. Seal the top edge to the pipe with high temperature silicone.
PelletVent Pro is Duravent's double wall, stainless steel inner liner venting system for pellet and corn burning stoves. Sections twist lock together with a gasketed seal, so no sealant is needed on the joints. Every PelletVent Pro component is listed as part of the system, so use matching PelletVent Pro parts throughout the run to keep the listing and the clearances valid. Check the appliance manual for the vent size and type it requires before ordering.
Rural Energy stocks the full Duravent PelletVent Pro line, along with the stoves and heaters it vents, and ships to dealers, contractors, and homeowners.