1、Good Compatibility: This 4B dual fan housing has good compatibility and is suitable for Pi Model 4 B 1GB, 2GB, 4GB, 8GB versions. 2、Excellent Aluminum Alloy Material: This 4B dual fan housing is made of excellent rate composite material, which is sturdy and wear resistant, not easy to be damaged, and has a long service life. 3、Anodized Exterior: The surface of this 4B dual fan enclosure is anodized and sandblasted, which is not easy to erode and damage. 4、Good Heat Dissipation: This 4B dual fan housing is close to the chip and comes with two fans for excellent heat dissipation. 5、Wide Application: This 4B dual fan housing has a wide range of applications and can be used at home, repair stores, etc.