This Aluminum 48 Inch Double-Wall Flex Connector with 4 Inch Inner Diameter from the DuraConnect II series is a Type B gas component and consists of the duralock system for a tight seal. Use as a connector system to replace rigid gas vent with a flexible section. DuraConnect II can be used when Type B gas vent double-wall connector is required. Not to be enclosed and cannot penetrate through walls, floors, or ceilings. Twist-lock connectors on each end.
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