![PIC_EU_S1A_4C-product_retina](https://bostonaircontrols.com/wp-content/uploads/2019/11/PIC_EU_S1A_4C-product_retina.jpg)
- Actuator family
- Mechanical Accessory
- Product family
- Mechanical Accessory
- NA Product type
- ZM - Accessory mechanical
- Structure Level1
- Actuators
- Structure Level2
- Accessories
- Accessory type
- Mechanical accessory
- Spring
- TFB(X)
Datasheet Download: Datasheet
![](https://bostonaircontrols.com/wp-content/uploads/2020/01/Henry-portrait.jpg)
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