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Co-developer Dr. Ilyas Colombowala
The reusable respirator has not been evaluated by the FDA, and Intermountain 3D makes no warranties as to its efficacy in any specific situation.  It is being offered as a stopgap to healthcare providers in this time of shortage.  However, great care has been taken to insure the safety of users of the mask.  

Respirator Components
The reusable respirator is comprised of a 3D printed mask, sealing strip, elastic straps and filter media made from Halyard H600 2-ply spun polypropylene (surgical wrap).  Other N95 or equivalent media can also be used.  

Respirator Specifications:
  • Body of respirator is 3D printed using bio-compatible nylon 12 material which has passed the ISO 10993-5 (Biological evaluation of medical devices - Part 5: Tests for in vitro cytotoxicity) and ISO 10993-10 (Biological evaluation of medical devices - Part 10: Tests for irritation and skin sensitization) standards
  • Respirator has been tested with an N95 filter using the N95 Respirator Fit Test with Challenging Agent at St Alphonsus Hospital, and passed all tests.  
  • Respirator has also been tested using filters made of Halyard H600 2-ply spun polypropylene (surgical wrap) and passed all N95 tests
  • Respirator currently comes in four sizes, large, medium, small, and extra small, and healthcare workers should complete a fit test to determine correct size

Care and Cleaning

  • Respirator can be wiped clean with water (and soap, if needed) and then sprayed with isopropyl alcohol or hydrogen peroxide and air-dried.  Do not immerse the seal in water.  Respirator can be reused indefinitely so long as the foam seal is intact.
  • Filter can be reused.  However, the filter should be changed after any aerosol-generating procedures, or if it has been contaminated with blood, respiratory or nasal secretions, or bodily fluids from patients.
  • Videos of how to replace the filter and foam seal are at the bottom of this page.

3D Printer Files

These STL files have been created and optimized for SLS (Selective Laser Sintering) 3D printers. They will likely not print on consumer-grade filament printers due to thin wall regions.
​If you’re looking for something to print with a filament printer,  the Montana Mask is a clever design whose CAD is available to download on the website www.makethemasks.com/

​If you have SLS printers and require CAD, please email us for the download link with the subject line "Respirator CAD".

Ordering

Because supply is limited, the masks are being made available to healthcare personnel and others on the front line of caring for victims of the virus.  The masks are shipped with one filter, but medical personnel must have access to their own replacements as needed.

Price is $19.50 each. To place an order, call Lynn at 208.391.5570

Sizing Chart

There are 4 sizes, L, M, S, XS.  Choose the size that best fits your A measurement
DISCLAIMER: The reusable respirator design and assembly have not been evaluated by the FDA or any other regulatory agency, and files are provided here to help in these extraordinary times. Intermountain 3D Inc. makes no representations, warranties, or guarantees regarding the safety, efficacy, or appropriate use of these respirators in any particular situation, and assumes no liability. Each facility should test each batch of respirators prior to relying on them for protection. Use of this information for any purpose is at the maker’s and user’s own risk.

Filter Media Installation

Foam Seal Installation

Elastic Strap Installation