Diameter 150mm
https://www.printables.com/model/1225484-intake-ducting-for-fiber-laser-lable-diameter-150m
Diameter 100mm
https://www.printables.com/model/1225491-intake-ducting-for-fiber-laser-lable-diameter-100m
For grid version, turn off top and bottom solid layer, layer height 0.2mm, set enough circuits to connect outer and inner circuit, Infil Grid 8%, designed for 0.4 nozzle.
More models for laser:
https://www.printables.com/@DeeDee_245307/collections/1107838
The author marked this model as their own original creation.