With viral and bacterial filtration efficiencies of over 99.99% the Hudson 1605 Universal Inline CPAP Filter comes complete with holders as shown. Hudson's filter technology helps stop the viruses and bacteria that often plague sleep therapy users creating a clean, sterile environment for a healthy night's sleep. A MUST HAVE FOR ALLERGY SUFFERERS Inline Bacterial Viral Filters are a great option for sleep therapy users who are prone to sickness or allergies. They actively clean the air as it leaves your CPAP or BiPAP machine, working in conjunction with the machine's built in filters, to provide exceptionally clean air throughout the night. SAFE, EASY & CONVENIENT These Universal Inline Bacterial Viral Filters are naturally hydrophobic so they allow maximum filtration with a minimum loss of air flow. Our Universal Mars Wellness Filters are easy to install and should not require re- calibration on most CPAP machines. Simply attach the filter to your machine between the air outlet and your standard CPAP tubing. After that, turn on your machine and experience a steady flow of clean, pure, good tasting air. 

• SUPER CLEAN AIR - These filters actively clean the air as it leaves the CPAP or BiPAP machine, working in conjunction with the machines built in filters, to provide exceptionally clean air throughout the night and helps to protect against viruses and bacteria
• MUST HAVE FOR ALLERGY SUFFERERS - Our Cpap / Bipap filters are a great option for sleep therapy users who are prone to sickness or allergies
• KEEPS AIR FLOW STRONG - Low resistance to gas flow means that the user keeps the strong airflow that come from the CPAP/BIPAP machine
• SIMPLE TO INSTALL - Bacterial Filter For CPAP/BIPAP Machines is quick & simple to install and replace - Simply attach the filter to your machine between the air outlet and your standard CPAP tubing
• DISPOSABLE FILTERS - Our Mars Wellness Filters will last on average 4-6 weeks before needing to be replaced, however your filters may last for a longer or shorter amount of time depending on environmental conditions. They should be replaced whenever the white filter material begins to look dirty.