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. It works in conjunction with the machine's built-in inlet filters for optimal performance. Technical specifications Male Connector End Outer Diameter: 15mm Female Connector End Interior Diameter: 22mm Fits 22 mm tubing machines Efficiency: 99.99+% Material: Plastic Color: Transparent 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. Usage Each filter is individually sealed for hygiene and convenience. Package includes 12 filters; other products are not included. Other information Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.