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30-day Money Back GuaranteeAerox DD725 Quick Donning High-Altitude Diluter Demand Mask for use up to 40,000 feet.
FAA TSO C78A and TSO C89A approval has been granted for production of the
4110-725 series mask. This mask is a long awaited alternative for approved
replacements of high altitude masks.
The Aerox Quick Comfort DD725 series diluter demand mask comes standard with an electret microphone and an inflatable Quick Comfort head harness. This head harness provides maximum comfort while allowing a very quick don and promotes an excellent seal to any face. The mask features a carbon fiber construction for light weight, and soft silicon rubber for a comfortable fit. Connectors are available for most built in systems. This mask is easily mounted with the available carbon fiber stowage cup, aerox is also able to manufacture a portable walk around system with the same outlet plug that is on your aircraft, so you can easily disconnect from the on-board system and plug directly into a portable system allowing mobility.
This 4110-725 series mask is intended to be used by crew and passengers in
the general aviation industry to an altitude of 40,000 feet MSL. The approval
for this mask compliments other FAA approvals aerox has already been granted for
oxygen system components. Please call for more information about any of our
approvals.
If you find a better price elsewhere on this product we will Match that price and beat it by 10% of the difference. See Details.
Purchase today and you can return it in the original condition through Wednesday, August 19, 2026! See our return policy.

Aerox DD725 Quick Donning High-Altitude Diluter Demand Mask for use up to 40,000 feet.
FAA TSO C78A and TSO C89A approval has been granted for production of the
4110-725 series mask. This mask is a long awaited alternative for approved
replacements of high altitude masks.
The Aerox Quick Comfort DD725 series diluter demand mask comes standard with an electret microphone and an inflatable Quick Comfort head harness. This head harness provides maximum comfort while allowing a very quick don and promotes an excellent seal to any face. The mask features a carbon fiber construction for light weight, and soft silicon rubber for a comfortable fit. Connectors are available for most built in systems. This mask is easily mounted with the available carbon fiber stowage cup, aerox is also able to manufacture a portable walk around system with the same outlet plug that is on your aircraft, so you can easily disconnect from the on-board system and plug directly into a portable system allowing mobility.
This 4110-725 series mask is intended to be used by crew and passengers in
the general aviation industry to an altitude of 40,000 feet MSL. The approval
for this mask compliments other FAA approvals aerox has already been granted for
oxygen system components. Please call for more information about any of our
approvals.
Q: Does this mask come with the puritan 566 connector?
A: The mask can be ordered with any connector that Aerox offers. For PB, it would either be PB-1 or PB-2. If you'd like to reply to this email with greater detail (what aircraft - make/model/year/tail number, altitude, etc) we will be happy to get in touch and see what we can work out! It will also help if you send pictures of the current connector (what you are looking for or currently using) and also pictures of the ports on the aircraft that you plug into. Feel free to reply directly to this email.
If you find a better price elsewhere on this product we will match that price and beat it by 10% of the difference.
Purchase today and you can return it in the original condition through Wednesday, August 19, 2026 ! See our return policy.