| 31. | Flue liners are needed for modern furnaces venting through existing masonry chimneys.
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| 32. | Could it be ducted into the hot air furnace ductwork or flue?
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| 33. | I also have a gas water heater exhausting into the same flue.
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| 34. | Battling the flue at the same time is something else.
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| 35. | Grayson said, adding that the family members found the flue closed.
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| 36. | This was a common room, warmed by flues beneath the floor.
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| 37. | In coal-fired power plants, flue gases are sometimes purified.
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| 38. | Scientists have developed exhausts and industrial flue gas stack emissions.
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| 39. | Apprentices were not allowed to climb flues to extinguish fires.
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| 40. | This caused the authorities to regulate the design of flues.
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