Roho Contour Select Cushion 20 W x 18 D Opthalmoscopes Heads Wood base measures 7 wide MSHQ BH180S Wood base measures 7 wide x 42 long and 1 1 4 thick * Height adjusts from 22 to 36 * Width adjusts from 16 to 24 * Handrail size: 1 1 2 * Requires only 14 of floor space when not in use * Comes with one stabilizing bar to lock parallel bars in open position * Adjustable The QUADTRO SELECT LOW PROFILE is adjustable to your shape and weight and will adjust to the changes in your position over time 20 X 18 * The contoured design combined with the simple operation of the ISOFLO© Memory Control unit offers provides a new level of postural control and stability that has never been achieved in an air cushion * The contoured design positions the pelvis back in the wheelchair and centers the individual comfortably in the middle of cushion * The ISOFLO Memory Control unit locks air into each of the four compartments providing stability by minimizing side to side and front to back motion * Adjustable to individual s shape and weight * Cushion is adjustable to changes in individual