Qidi Plus 4 8038 Exhaust Fan Shroud

Extended the original file by 13mm in order to fully enclose the 8038 fan body, and thereby eliminate the gap left at the top of the exhaust fan present in the original design.

This version covers the gap between the 8038 fan and the printer body (present in the original design) to eliminate drawing air in from the rear electronic compartment. This should help increase static pressure and the effectiveness of the HEPA filter in conjunction with @darkdoctor's Qidi Plus 4 Advanced Filtration System. https://www.printables.com/model/1145654-qidi-plus-4-advanced-filtration-system