Exhaust Port for K40 Laser machine 4" pipe

This is my take on an exhaust port for the popular K40 Laser machine. To allow me to print it in one piece on my Anet A8 200mm bed I reduced the length and made up a support post to fit one end. The advantage of this is I can slide out the port and use it on my 3D printer by printing an additional 3 support posts.

As a side note I relocated the original extractor fan to my dustbin and brought an inline extractor which goes out through a hole in the wall.