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◆采用獨特的推開百葉機構裝置能自動打開和關閉百葉窗葉片；

◆采用不銹鋼扇葉片一次沖壓成型工藝，不變形、不斷裂、美觀耐用，高精度動平衡檢測校正，保證風機運轉平穩無振動，降低噪音，有效提高使用壽命；

◆采用特有的凹進式風機搬運提手設計，不但有效避免裝卸、搬運過程中的不便，還不會影響風機安裝和外觀效果；

◆V型皮帶輪由高強度的鋁合金材料熱壓鑄成型，材質輕、強度高；

◆配置高效節能電機，通過3C認證，防護等級：IP55，絕緣等級F級；

◆機械離心式打開機構采用韌性高的增強尼龍100%原料注塑加工，強度高、壽命長；

◆導向桿內嵌的鋼件安裝在法蘭片上，增強了機構的可靠性，有效避免尼龍生產過程的伸縮變動。

◆Patented designed centrifugal system which can open and close automaticlly,ensuring the shutter opens 90degree under all the condition.And uncontrol-lable air can prevent from going into the birdhouse when the shutter works;

◆Mirror designed and injection moulding Stainless steel balde,with big air volume never distortion and broken;

◆Experiment of homeostasis make the blade work smoothly,nearly no noise and steadily output of air;

◆Centrifugal shutter system made of high quality engineering nylon,high strength and long service life;

◆High efficient and energy-saving motor with ccc certificate,protection class:IP55,insulation class:Fgrade.