Oxygen mask help

[chutedragger]

I am looking for a used mbu-20 oxygen mask. Does anybody have the dimensions for choosing the offered sizes. I have seen a chart once...but for the life of me, can't find it since. Gentex offers small wide...medium narrow etc, but no sizing chart. I don't want to eBay purchase one that is the wrong size.

if anybody has one for sale....please feel free to let me know as well.

I am building a fresh air system for civilian rotary wing...so the mic, cords, and pressure system tubes are not required.

Thanks!

[NutLoose]

Quickest look in history ;) it was under specifications and downloads on the bottom link, see the top link


https://shop.gentexcorp.com/content/Gentex_MBU20P_Oxygen_Mask.pdf


https://shop.gentexcorp.com/gentex-mbu-20-p-oxygen-mask/

[NutLoose]

https://www.researchgate.net/publication/267970285_Development_of_a_Design_Process_for_an_Oxygen_Mask _based_on_3D_Face_Scanning

[NutLoose]

http://www.dtic.mil/dtic/tr/fulltext/u2/a065901.pdf

page 38 gives you the percentile table which is a 1957 usaf survey

[chutedragger]

Thanks Nutloose,

I had done the "quick" search....on the gentex site only gives the part numbers....not the actual part number vs the size/dimensions of my face.

There must be (I have seen one done in a red diagram) a chart so you know what size to order, based on your personal dimensions.

[chutedragger]

The Page 38 USAF, charts are for them MBU-12. They only measure those ones by length.

The Mbu-20 offers small medium large, with a narrow,wide option!

[chute packer]

We use the HA/LP version at work, I can scan the fitting page tomorrow if you like with the measurements.

[chutedragger]

That would be great!

Thanks!

[chute packer]

Can you PM me an email address to send the pics to.

[chutedragger]

Sent!...Thanks!!!