·產(chǎn)品詳情介紹:
可直接安裝在風管管道上,與風管相連接,根據(jù)管內(nèi)風壓自動開啟或關閉 。防止氣流倒流作用,不可調(diào)節(jié)風量,直徑大于800時需做方變圓型
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