Air Cell Wheelchair Cushion 18 x 16 x 4 Low Air Loss Systems 5 Upright Position 4012SC 5 Upright Position 53 The lightweight heavy duty aluminum means you don't have to worry about maintenance and ensures the Gateway Solid Surface Portable Ramp can be used in even the harshest of weather conditions * The lightweight heavy duty aluminum is more durable than wood allowing you to repeatedly use the ramp every day without worrying about deterioration * The one piece design of the Gateway Solid Surface Portable Ramp means no assembly is required * All you have to do is set it in place and it's ready for use * Slip resistant surface * Designed with a permanent extruded slip resistant surface the Gateway Solid Surface Portable Ramp makes sure that wheels don't lose traction removing the worry of wheels slipping on the ramp * Useable size: 6'x36 x3 18 x 16 x 4 * Proven design for pressure relief and position equalization * Position equalization results from the variable action of individual air cells * Adjustable air pressure provides relief based on user s individual needs * Easy to use air pump is included * Low surface tension reduces friction and skin shear * Low shear fluid proof cloth cover (not shown) protects against incontinence *HCPCS Suggested Code: K0108