Feature: 1. Provides exceptionally clean air, good filtering effect. 2. It is easy to install and replace, just connect the filter between the air outlet of the machine and the standard breathing machine pipeline. 3. Filter particles in the pipeline. Generally, it needs to be replaced after 24 hours of use, and it cannot be reused because of excessive sputum. 4. Important accessories for breathing machine, beneficial for . 5. Made of quality material, safe and eco‑friendly, stable and practical. Specification: Condition: 100% Brand New Item Type: Filter Material: Plastic Leakage Rate: ≤25ml/Min Filtration: ≥99.9% Interface Size: 22F-22M/15F (mm) Package List: 2 x Breathing Machine Filter