Safetysure Wheelchair Board 18 L x 18 W Cushions Foam Two sided chestpiece with tunable diaphragms Commode Shower Chair Accessori Two sided chestpiece with tunable diaphragms on both the adult and pediatric sides * Single piece tunable diaphragm is easy to attach and easier to clean because its surface is smooth without crevices * Pediatric side converts to a traditional open bell by replacing the single piece diaphragm with a non chill rim * Next generation tubing provides longer life due to improved resistance to skin oils and alcohol Special procedures adaptor for difficult site or pediatric ausculation * Available in a selection of classic tube colors * 7 year warranty Shipping Carton Size: 16 L x 14 W x 5 H 18 L x 18 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 *