General description The Viral In-Line Outlet Filter is designed to clean the air leaving a CPAP or BiPAP machine, enhancing the overall air quality for users. It works in conjunction with the machine's built-in inlet filters to provide superior filtration. Technical specifications Male Connector End Outer Diameter: 15mm Female Connector End Interior Diameter: 22mm Fits 22mm tubing machines Efficiency: 99.99+% Material: Plastic Colour: Transparent Package Contents: 12 filters Measurement allowed error: +/- 1-3cm Installation Quick and simple to install and replace. The filter attaches between the machine's air outlet and the CPAP hose. Other information Each filter is individually sealed. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.