Fireplace damper position indicator
作者： Donald R. Ditto
DOI:
关键词:
摘要: A fireplace damper position indicator for indicating whether the to flue is open or closed prevent building a fire with leaving allowing air escape from room. The device briefly magnetic holder attach lintel and hanger pivotally secured connect sign. sign has indicia "open" on one side "closed" other such that when turned read open.
lens.org 参考文章(6)
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