Raz-SP Standard Features Moulded Seat contoured for pressure reduction and pelvic stability soft integral-skin foam for comfort and durability available with open or bridged front available sizes: 18″Wx16″D, 18″Wx19″D Ischial Pelvic Alignment System provides 2” of fore/aft adjustment so the seat can be aligned with the pelvis allows centering of the aperture (opening) around the users’ ITs seat locks in place for transfers removes easily for cleaning optional spacers for anterior or posterior seat angle adjustment [Z491] Fixed Back includes adjustable tension fabric back upholstery provides flip-up angle adjustable armrests available in 17″ and 20″ back heights locking armrest upgrade available [Z710] Adjustable Footrests removable for transfers and cleaning swing in and out easily flip-up footplate adjust for leg length without tools available in regular length 16″-20½” and extended length 18″-22½” Tension-Adjustable Back Support Fabric polyester fabric for durability and comfort against skin provides individualized trunk support for optimal positioning and comfort removable for machine washing available in 17″ and 20″ back heights Telescoping Caster Extensions provide 4″ of seat height adjustment without the use of tools dropped front frame tube improves access over standard toilet bowls Multi-Position Axle Plates provide up to 4″ of vertical seat height and 1.5″ of horizontal adjustment for optimum user / toilet bowl access allow use of 22″ or optional 24″ rear wheels Commode Pan Injection-molded pan is designed for function Includes a lid for splash and odor control Wide handle angled at 45 degrees provides better ergonomics Sloped front of pan moves contents toward the handle to reduce offset load, thereby making it easier to carry Receiver brackets under seat are visible from the rear of the chair, making it easier to slide the pan into place Fits in a standard autoclave and Arjo Tornado Washer