anet A8 High flow extended fan duct (for use with autolevelling sensor)

This fan duct has an extended throat to be used with A8 sensor and slightly larger than normal passageways to help airflow.
It is also 8mm longer than the standard fan duct.
I have found a noticeable improvement, with my prints, using this design and the throat measurements for fitting on the fan seem to fit better than the stock fan duct, with it never having moved from its mounted position.
I would advise printing a little slower than normal to ensure dimensional accuracy.