Instructions: Keep Calm & Print On Bill of Materials: Print 1 x Front Valves (All 4 Parts) 2 x Side Valves (All 3 Parts) 2 x Filter (Spring is optional depending on filter thickness) 1 x Respirator 2 x Strap Attachments (1 of each, except 2 x top strap attachments) Other Supplies Super glue (preferably liquid) Hot glue (optional but adds a nice seal) Weather Stripping 1/2in Elastic Filter Material (preferably HEPA or Active Carbon) Heat gun or propane torch or lighter Print Settings: Suggested Material is PLA Designed for a .4 nozzle Print Speed 3600 mm/min or faster Layer height: .3mm (except valve flap print at .1mm) Infill: N/A Supports: No Top Solid Layers: 3 Bottom Solid Layers: 3 Perimeter Shells: 3 Outline Direction: Outside-In External Thin Wall Perimeter Internal Thin Wall Allow Single Extrusion *avoid gapfill* ~ Coming Soon faster over extrusion instructions