Check the listing for details. Universal Fit in-Line Bacterial Viral Replacement Filter for CPAP & BiPAP - 3 Pc. Color: Clear/Blue, Condition: New with box. Listed at 12.99 USD. Universal Fit in-Line Bacterial Viral Filter for CPAP and BiPAP Machines - 3 Pc Will fit with standard CPAP hose. This filter offers over 3 times the filter media compared to a round filter. This allows for better airflow and longer filter life. Just need connect the filter to cpap machine between the air outlet and your heated tubing or mask elbow.Compatible With Most Cpap Machines: Fit In-line filter for 22mm tubing machine and 25mm mask elbow. Hospital Overstock. The filters you receive will be factory sealed. You will not receive the ones that were opened for the photos. This filter is meant for single use. This filter should not be cleaned or washed. The filter measures basically 2-3/8" x 2-7/8" x 3-1/2" H. The opening sizes are:7/8" (22mm) ID & 15/16" (25mm) OD25/32" (20mm) ID & 7/8" (22mm) ODThis item ships via USPS First Class Package.Bin 461