I have a F&P 431 mask no issues with it except I have 2 connectors a blue one and a clear one as I understand it the blue one is cpap and the clear one is bilevel here's when my confusion starts, I have only been using CPAP therophy for a week and I can wear the mask all night no problem BUT I'm not sure I have the correct connector on my machine is a sleep style 600 and with the clear connector I currnetly have on all the air seem to escape out of the holes that perforate the elbow. I no idea the difference with bilevel and cpap all I know is I am suppose to be cpap anyone any ideas thats if you can make sense of this post
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