Simple dust filter for 3M 603/6800 (and compatible) gas masks.
Fits the standard 5N11 CN pads included with most filters.

Loosely based on the model by vyrobca, but recreated from scratch.

No unnecessary undercuts/overhangs, stronger mounting flange and overall sligthly taller body with a slight angle to the back for easier airflow.

The main body is printed best upside down with supports around the mounting flange.