Quad Cane Large Base Silver w Vinyl Grip Oxygen Masks Made for a D E Oxygen Jobst Relief 20 30 Knee Hi Made for a D E Oxygen Tank * Fits most wheelchairs * Durable and strong oxygen holder * 27 H * Optimum Comfort Gel Cushion (16 x 16 ) * Unique channeled gel bladder prevents gel migration in high pressure areas * Gel channels provide relief over the entire cushion area * Foam base provides additional support * Inner foam core has a liner to protect the integrity of the foam * High end cover with straps weight capacity * Limited Lifetime Warranty * HCPCS code E0105 * Item has a lifetime warranty on the frame at the weld point the attn knob knob has a 90 day warranty Chrome * Large base * vinyl grip * Base measures 8 x 12 1 4 * 4 point base combined with offset handle provide additional stability and support * Easy to use one button height adjustment with locking bolt allows quick safe fitting * Height adjustment 29