Frequently Asked Questions (FAQs) FAQs for Product: VPAP™ IV with H4i Humidifier 1. What is vpap? (Posted: 7th April, 2010) Question & Answers for Product: VPAP™ IV with H4i Humidifier Q. What is vpap? (Posted: 7th April, 2010) A. VPAP is a trade name for a series of bi-level positive air pressure machines. Back to Top Submit A New Question Can't Find The Answer You're Looking For? Submit Your Question Below: Related Product:  VPAP™ IV with H4i Humidifier Your Question:  (Please enter One Question Only! You can ask as many questions as you like, but do not combine them into one post!) Your Reply Email Address:  Security Step:  Enter the text to the Left in the space below: [ CLOSE WINDOW ]