Ideal for narrow bath tubs and showers where a regular chair won't fit - making it great for use in RVs, boats or trailer homes. A rust-proof frame made of anodized aluminum provides years of dependable use. The 13" wide seat adjusts in height to provide a custom fit from 13.5" to 20.5" and features legs with slip-resistant rubber tips to grip the tub floor and provide a stable base. Tool-free assembly. Weight capacity 300 lb.