About this 3D model

This model is designed by easyrider1984 (http://bit.ly/2pmxVXi), thank you very much for your great support. For details, please see the description below: Summary Cooling Duct for Anycubic 4Max. This duct is designed for a 50x50x25 blower fan. There is no space for screw, so I made 2 holes to use ribbon to keep the fan in place. The duct height is adjustable, range about 4mm, to get more accurate cooling target. Other materials: 2xM3.5-10 screws, 1xM3.5-40 screw, 3xM3.5 Nuts