BDM Dalsin Line Pro-Form 3" x 3" Aluminum Insert Co-Linear DV Termination Kit With 2PCS 30ft Flex d22.38 Why would I use a

Why would I use a B-vent over Class A chimney

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BDM Dalsin Line Pro-Form 3" x 3" Aluminum Insert Co-Linear DV Termination Kit With 2PCS 30ft Flex d22.38 Why would I use a"Dalsin Line" Aluminum Flex Liners are used for venting category 1 heating appliances or direct vent appliances into a masonry chimney. Manufactured using Type 3003 aluminum, this heavy duty 2 ply liner is made from two strips of . 005", high grade aluminum for a total thickness of . 010" What's Included 3"x 3" Termination Kit Chimney Cap 2pcs 30ft Aluminum Flex Features Liner is made from 2 ply of . 005 thick type 3003 aluminum strip Components are