DuraFlex SS Connector Adaptor for 5.5" Chimney Liner - 55DFS-FC. A vent pipe with a 6" inner diameter is required for this unit. DuraFlex's stainless steel Connector Adaptor is comprised of single wall stainless steel. The DuraVent DuraFlex zero clearance insulation sleeve is made of .005" 304 stainless steel and 316Ti (titanium) stainless steel and is designed to fulfill the UL1777 standard for brick chimneys and wood burning appliances. DuraFlex relining pipes and components are designed to work with gas, wood pellet, oil, or wood-burning equipment such as furnaces, boilers, fireplace inserts, and water heaters. For easy installation, this adaptor is attached with screws or pop rivets.

DuraFlex Connector Adaptor for 5.5-in. pipe Used to connect 2 pieces of DuraFlex together or connect DuraFlex to a fireplace insert Attaches with screws or pop rivets