Prusa MK3s+ extruder does not come with a fan cover. The amount of room when the extruder is on the far left position does not allow for a normal fan grill/cover. This super low profile fan grill/cover will clip in place and still all the extruder to travel to far left position without any binding. This will also work with Noctua or other brand 40mm fans with the same frame profile. Very easy print without the needs of supports.

Confirms it fits Noctua NF-A4x10 FLX

Nozzle - 0.4mm

Layer - 0.2mm

Support - No