The 2-7600-0 (Salter) Bubble Humidifier Bottle with safety valve is a unit designed to support CPAP parts, specifically for oxygen concentrators. This black bottle, made by Salter Labs, is an original product with a quantity of one. It serves its purpose by providing a safe and efficient solution for humidifying and delivering oxygen during sleep, promoting overall health and well-being. You will receive 2 bottles Free shipping