Solid Back Insert Wheelchair Cushion 18 x16 x1.25 w Strap Specimen Collection Products Fast Set in 5 8 minutes Imaging Fast Set in 5 8 minutes * 2 x 3 Yards Bx 12 * Specially treated plaster spreads uniformly * Thick creamy texture when wet which allows for a smooth cast finish * 18 L x 16 L * Provides flat sitting surface and eliminates the hammock effect associated with traditional wheelchair seats * Made of lacquered finished plywood * Corners and sides are rounded to prevent chipping * Makes an excellent sitting surface when combined with a pressure relief cushion * Splinter free plywood * Weight capcity : 300 lbs * SOLID SEAT BACK * 18 W x 16 D x 1 1 2 * Custom and bariatric sizes are available * Used to properly align the body as well as to eliminate the sagging effect found in standard sling seat wheelchair upholstery * Safety straps secure the solid back to the wheelchair * Cushion uses medium density foam and is covered using waterproof black leatherette cover