to 6 in., the closest clearance to a wall of any connector pipe. DuraVent 8" Inner Diameter - DVL Stove Pipe - Double Wall - Tee with Clean-Out Cap. Available in 1 Finish. When installing a factory built chimney and you need interior pipe with reduced clearance to combustibles, use Dura-Vent DVL Double Wall Stove Pipes. DVL's double-wall, air-insulated design reduces clearances to combustibles from 18 in. Use to increase from a smaller appliance flue outlet to larger diameter chimney or stove pipe. DuraVent 7" Inner Diameter - DVL Stove Pipe - Double Wall … Model: 8DVL-T. $180.17. DuraVent DVL Stove Pipe - Double Wall - Adapter. Model: 5DVL-AD. DVL s double-wall, air-insulated design reduces clearances to combustibles from 18 to 6 , the closest clearance to a wall of any connector pipe. UL Listed DVL double-wall stove pipe completes the venting system when used with one of DuraVent s chimney products, such as DuraTech or DuraPlus. DuraVent 6DVL-AD DVL Appliance Adapter (No Damper), Connects Double-Wall DVL Stove Pipe To Appliance Flue Outlet, Painted Black, Stainless Steel Inner, 6" Inner Diameter 4.4 out of 5 stars 33 … $184.04. Completes the venting system when used with one of DuraVent's chimney products, such as DuraTech or DuraPlus DVL's double-wall, air-insulated design reduces clearances to combustibles from 18" to 6", the closest clearance to a wall of any connector pipe. It has an inner wall … Available in 1 Finish. These double wall stove pipes for sale let you reduce clearance to combustibles from the stovepipe from 18" down to 6" to walls and 8" from ceilings. DVL double-wall stovepipe completes the venting DVL double-wall stovepipe completes the venting system when used with one of DuraVent's chimney products, such as DuraTech, DuraPlus, or DuraPlus HTC.