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The DURAVENT 4PVP-ADFM Vent Adapter PelletVent Pro ADFM is a 4-inch male flex adapter. Designed for use with Bio Flex, it features a daglock system for a tight seal. The corrosion-resistant metal inner wall and laser-welded construction ensure durability. It is UL listed for 1" clearance to combustibles and has a double-wall, air-insulated design.
4 inch Pellet Chimney Male Flex Adapter for Use with Bio Flex. Use to connect Bio Flex to Pellet Vent Pro when relining a masonry chimney.
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