Comes assembled except for the casters * MJM Tub Bather System comes with a 360O swivel seat that locks in 4 positions * Fits securely on any standard size bathtub full assembled * No tools needed * User-friendly fold down back section * Adjustable legs sit inside tub for stability * Horizontal support bars sit on tub wall and tub inner section wall * Healthcare grade * Adjustable legs * Safety belt increases safety for your resident * PVC Chairs won�t rust fade or stain * Dimensions * Seat depth: 18 * Internal seat width: 18 * Internal width between arms: 21.5 * Back height: 16 * Weight capacity: 250 Lbs *