M&G DuraVent 3PVL-X4ADR 3" To 4" Pellet Stove Chimney Pipe Adapter

New 3" To 4", Pellet Stove Vent Appliance Pipe Adapter by M & G Duravent Inc. model 3PVL-X4ADR item 176299 DuraVent 3" To 4", Pellet Vent Appliance Pipe Adapter Used To Attach Outlet When Increasing To 4" Pellet Vent from 3" On Venting Stoves Above 4,000'. Must Seal Adapter To Appliance With High Temperature Sealant Designed For Stoves That Burn Wood Pellets Patent Pending Venting For Stoves & Inserts That Use Wood Pellets UL Listed For 3" Clearance To Combustibles In USA & Canada Made in USA