Tranquility® AIR Plus™ Low Air Loss Underpad, 30 x 36 Inch, 1 Case of 40 Default Minor Category s upper back shoulder and VB604 GN s upper back shoulder and neck areas can also be treated * This option provides a standard stationary unit * Product Function: *For use on upper back * Product Details * Material: Stainless Steel * Legacy Model: DF 6018 JO 315B * Appropriate for: Athletic Trainer Physical Therapy * Capacity in Liquid Volume: 90 gallons * Body Treatment Location(s): sitting neck * Internal Length: 60 * Internal Width: 24 * Internal Depth: 18 * Certification(s): MET CE More than four times the ASTM (American Society for Testing and Materials) standard for fingertip thickness consistently smooth even surface minimizes pressure points and sheer friction concerns due to its uniformity