雙層百葉風口
雙層百葉風口，廣泛應用于空調系統中作送風口，根據使用要求，風口后面可配制鋁制風量調節閥（人字閘），雙層百葉風口具有兩層相互垂直頁片調節水平和垂直頁片的角度，調整氣流擴散面，以改變射程，風口的外框寬度有寬邊框和窄邊框兩種，可用于特殊要求的通風系統中。

FK-DB series grilles
Serial shutter inlet ports are usually installed on the pipe or the sidewall to use as side inlet port. There are two layers of adjustable shifting vanes in the double layered shutter inlet port The short one is used to adjust the angle of flare of the blowing airflow and to shift the direction of the airflow while adjusting the long one can make the blowing airflow affix the ceiling joist or descend at an angle (when blowing warm wind). The outside vane of the double layered shutter inlet port or the vane of the single shutter inlet port can be parallel either to the long edge or to the short edge, which is being to adjusted to the needs of customers.
Characteristic:
Double grille:
1,The use of the adjustable double-layered vanes can bring different blowing distances and different angles of flare.
2,Use as inlet port
3,Be made of Aluminum or iron
4,Be used together with adjusting valve
5,With a sealed spongy gasket
Single grille:
1,The use of the adjustable single-layered vanes can bring different blowing distances and different angles of flare.
2,Use as inlet port or outlet port
3,Be made of Aluminum or iron
4,As a blowing inlet port, it is used with adjusting valve.
5,As a blowing outlet port, it can be made a structure easy to open and be used with a gauze filter.
6,With a sealed spongy gasket