Manufacturer's Note - A valid prescription is required for the purchase of this product. Within 48 hours of placing an order, please fax your prescription to 267-295-8736. Respironics recommends that new patients purchase their devices, masks and initial accessories from a homecare company that can provide an individualized patient equipment set-up, clinical and after-sales support, and a program to assist patients with therapy success. Our price includes the following patient support: telephone support with respect to therapy questions and problems, devices re-titration, replacement accessories and supplies available for purchase, after-sales service and support. We are only authorized to sell and ship Respironics products to patients residing the United States.