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Category: CPAP Masks > CPAP Masks > Full Face
FlexiFit HC431 Full Face CPAP Mask with Headgear
$101.00
This product ships for FREE! Shipping Policy
Rated 4.3 out of 5 by 249 cpap.com customers. Read reviews.
13% of Full Face Mask product buyers choose this product. Read rankings.
Prescription Required
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Key Product Information

    Manufacturer: Fisher & Paykel

    FlexiFit™431 Full Face Mask

    We are pleased to introduce the FlexiFit™431 Full Face Mask, one of our latest additions to the FlexiFit™ family of CPAP masks. Our under chin design provides maximum stability and seal even with jaw movement. The proven FlexiFit™ Technology and Glider™ Strap remain, providing a full face mask that is extremely easy to fit straight out of the box.

    KEY PRODUCT DESIGN FEATURES INCLUDE:

    * FlexiFit™ Technology

    * Unique Glider™ Strap

    * Under Chin Design

    * Advanced Air Diffuser

    * Crown Strap on the headgear

    * Easy to release strap - no adjustments required

    You can use our online sizing tool to find out which masks will work best with your facial structure.

    If you still aren’t convinced that this is the mask for you, all you need to do is buy our Return Insurance and you can send it back within 30 days for a refund of the full purchase price. Read all about it here:

    Return Insurance Option

    We sell Replacement Parts for this mask. If you need to replace only one part of your mask instead of buying a new one, we can help you find the part!

    Returns Offered With Insurance Purchase

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CPAP.com Comments
All size cushions are interchangeable with the HC431 mask frame.

HC432 and HC431 Compatibility

432 silicone cushion and foam cushion insert will not fit the 431 frame.

431 silicone cushions made after April 2006 will fit the 432 frame.

431 silicone cushions made before April 2006 will not fit the 432 frame.

The Flexifit HC432 mask sizes run a little smaller, If you are switching from the HC431.

A prescription is required to buy this product. You may fax it to us at 1.866.353.2727 or 1.713.541.7370. If you are purchasing a CPAP, BiPAP or APAP machine, please make sure the pressure setting is indicated.

Related Parts and Accessories
Mask Elbow Kit
Silicone Seal (cushion)
Forehead Pads (2/pkg)
Replacement Headgear
Tri Glide Buckle
Glider Strap
User Reviews

FlexiFit HC431 Full face CPAP   January 19, 2010

(5 out of 5) by John E, Fairfield, CT

"This mask has been greatly improved from the old HC431 I have been using! It has made a world of difference in my quality of sleep! That you CPAP.com for bringing it to me at such an affordable price!!!!!"


1 of 1 found the review helpful.
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Easy on the nose bridge   January 13, 2010

(5 out of 5) by Lawrence

"I have been using a full-face mask for about 9 years with a pressure setting of 14. Over time, I have tried 6 or 7 different type masks from 4 different manufacturers. Mostly I have used Resmed masks. I've had problems with most masks with too much pressure on the nose bridge. I have a deviated septum, and always have had to use a very tight setting to avoid leaks at the top. I never found a comfortable setting with the Resmed adjustable head pieces. So the fact that this mask crosses the nose at a lower point was the primary reason that I bought it.

When I first started CPAP, I was fitted with a medium size. Subsequently I have tried and rejected both large and small sizes in an effort to find a mask that doesn't leak. The FlexiFit came with all 3 cushion sizes, and to my surprise, the small fits the best. This is the best I have ever found for leak stoppage.

I have a beard which contributes to leakage on the bottom, but I am too stubborn to shave it off. I was a little concerned about the under-chin fitting, and with the medium cushion, I did have leaks. I wear the small cushion pushed up just a bit, and have had only minimal leakage. For the first time in a long time, I have not awakened with a terribly dry throat, which I have always attributed to mask leakage.

Being left handed, I missed the quick open button on the left side, and find the supplied button to be poorly engineered for a left hander. Righties probably won't care about this."


4 of 4 found the review helpful.
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Not for me   January 12, 2010

(5 out of 5) by Don S, FL

"Although I had high hopes for this mask, it did not work for me. I had my worst night since starting Cpap 3 months ago. I am quite sure I had the best fit as with the chin inside feature it is easy to fit.

I think because it covers more ground, it has more area to lose seal and leak. I do move a little in my sleep so I have to assume I lost the seal in my sleep and leaked air a lot. I awoke several times and adjusted but still data shows it leaked again quickly. Although all FFM's have leaked some for me, This is the first mask that showed a large leak in my data the next morning. I have tried many full face masks, including the Quattro and Ultra. I have to say this leaks the most and I had to adjust the straps fairly tight to keep it in position.

The marks from this one were with my for several hours the next day. With others the marks are usually gone by the time I get out of the shower. I realize one day is not a trend but I feel I have enough experience with other masks to know this will not work for me.

I do not feel comfortable enough to even try it a second night as my AHI was so poor this first night. My AHI was almost what it is with no CPAP at all, and 2-3 times what it is with any other FFM. Although other FFM's have not been 100% effective for me, all have shown much improvement from AHI with no Cpap, usually cutting my AHI from 69 with no treatment, to 20-30 range with FFMs. My AHI was 59 with this mask. I have only been able to get the index below 5 with nasal and pillow masks. But due to being a mouth breather, I need to find a FFM, as to make a nasal work I have to go through too many hoops and hurdles (chinstraps, Afrin, shave & tape, etc). I hope this helps someone but I think this is a difficult mask to work."


1 of 3 found the review helpful.
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January 07, 2010

(4 out of 5) by Mary H, Fountain Valley, CA

"I ordered this mask because my usual mask (Fisher and Paykel Mask HC406 – nose only mask) had worn a blood blister just below my nostrils that would not heal because I continued to wear the mask. I have very fragile skin, and finally admitted I needed a full fax mask – at least temporarily. The customer service person I spoke with recommended the FlexiFit HC431 Full Face CPAP Mask with Headgear because of its sizing flexibility; because it comes with three sizes of cushions, it is really a “one size fits all” mask. The “small” cushion fits me perfectly.

I have worn the FlexiFit HC431 Full Face CPAP Mask with Headgear now for about a month and am delighted that my blister has finally completely healed!

Although I prefer to wear the smaller mask, I will continue to use the FlexiFit HC431 Full Face CPAP Mask with Headgear because I’m sure that I have not had my last blood blister! It is comforting to know that as soon as my nose gets sore again, I can switch to the full face mask immediately – before it gets any worse.

I believe the seal is better on the Mask HC406, if for no other reason than being smaller, it has fewer inches in which to have n air leak. However, the head gear is quite comfortable and using both masks I think I have the bests of both worlds.

I love that cpap.com has customer service people readily available to answer questions and make recommendations. That’s the kind of service that has ensured my business both now and in the future."


3 of 3 found the review helpful.
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December 23, 2009

(5 out of 5) by David D, Lakewood, WA

"I am glad I got the return insurance.

It just did not fit me well. The small was too small and the medium was too big. (Nice that it had all sizes in kit)

The head gear seemed nice but did not adjust well to fit my head.

The quick release was kind of strange and not the best design. A tube quick release was also not part of the design.

The forehead pad was awful; it needed to be more of a softer gel instead of a hollow tube that you could feel the edges of.

The forehead pad/bridge of nose piece also needs to be adjustable not just straight. If you could angle it back just slightly it would be a bit more comfortable.

Those were reasons I returned it."


4 of 4 found the review helpful.
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Related Product Videos
Instructional CPAP Videos  Fisher and Paykel HC431 Full Face Mask (00:01:36)

This video gives information on the Fisher and Paykel HC431 Full Face Mask.

Product Images
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HC431 animation    
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