TOTE Oxygen Tank Carrier fits D Cylinder for Wheeled Walker Raised Toilet Seat weight capacity * Durable maintenance free 14272 weight capacity * Durable maintenance free powder coated Silver tone finish * Footprint of anti tip base is 25 x 20 Dual Channel * 4000 mHz * Unit comes complete with: set of 2 wires pack of 4 silver silver chloride self sticking electrodes 9V alkaline battery ac adaptor instruction book and attractive carry case * Dual channel quadra polar * Adjustable pulse amplitude * Carrier frequency plus interference frequency * Sweep and treatment timers * Shipping Carton Size: 12 L x 10 W x 6 H * HCPCS Suggested Code: E0730 * Interferential stimulators use a fixed carrier frequency of 4 000 Hz per second and also a second adjustable frequency of 4 001 4 400 Hz per second * When the fixed and adjustable frequencies combine (heterodyne) they produce the desired signal frequency (Interference frequency) Carrier for D cylinder * Oxygen Cylinder Holder increased mobility and freedom for individuals who are required to use oxygen and a wheeled walker * Secures to the walker with 2 hook and loop fasteners and a safety buckle strap at the top and a centering strap near the bottom of the walker * Convenient pocket for the wrench * Manufactured and sold under U Patent #6 672 321 *