TEST PAGE V3 At the Oxygen Concentrator Store by American Medical, we want our customers to be happy with our products and service. This customer satisfaction policy allows you to return or exchange eligible items you purchase from us within 14 days of receipt of order. We strongly encourage you to immediately inspect and use your concentrator to make sure that it is fully functional and meets your needs, because our customer satisfaction policy is time-dependent. In addition, please read the manual that is included with your shipment. It has helpful information with regards to maintaining your unit as well as important warranty information. Please note: To help our environment, we reuse boxes and packaging materials as much as possible. This will explain if your box shows signs of wear.