Measure in attics and crawl spaces for insulation and ductwork.
衡量閣樓和管道crawlspaces絕緣和.
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Sheet metal ductwork and specialties, complete with insulation, and dampers in accordance with drawings and specifications.
與圖紙和規(guī)格相符的完全絕緣的金屬片管路 、 特殊金屬和阻尼器.
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