Shower Chairs feature aesthetically pleasing ergonomic curved arms that support users without sharp edges, Arms features anti-slip safety handgrip providing comfort and safety using your shower chair, Fast drying and removable mesh back/sling provides sanitary construction ideal for home and institutional use, Threaded stem castors provide additional safety compared to typical friction fit found on other chairs, Internal Width: 18"", External Width: 22"", Threaded Stem Casters: 3"" x 1-1/4"", Overall dimensions: 40"" H x 22"" W x 18"" D, Seat Height: 21"", Capacity: 300lbs"", SKU: MJMIC256