Perfecto Home Concentrator Replacement Filter:

This Invacare Perfecto Home Oxygen Concentrator replacement foam filter. This filter is designed to keep dust and large particles out of your Invacare Home Oxygen Concentrator. It is designed to be cleaned at least once per week and more often if necessary. In most models the filter is found on the outside of the back intake door. In other older models you may find the foam filter on the inside of that intake door.