ResMed Inlet Filter Pack for Astral Ventilator

Resmed Inlet Filter Pack-27939 ASTRAL INLET FILTER RESMED 4-PACK Replacing the air filter Inspect the condition of the ASTRAL INLET FILTER and check whether it is block by dirt or dust. With normal use, the air filter needs to be replaced every six months (or more often in a dusty environment) DO NOT WASH THE AIR FILTER. THE AIR FILTER IS NOT WASHABLE OR REUSEABLE To remove and replace the air filter Unlock the air filter cover by turning in anti-clockwise direction.