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Gas Chimney Liner Kit B-Vent Adapter 5" x 25" Natural Gas Aluminum Front Water Connections - MLK0525
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B-Vents, Gas Chimneys: Suggestions for the selection, installation, & inspection of B-Vents for gas fired appliances
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Got a new furnace installed and chimney guys just told me that this is not code. Is this not code? : r/hvacadvice
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