What are the sizes of walk in tubs?

Generally, walk-in bathtubs are designed and manufactured to fit inside the spaces built for standard high tubs. Typical sizes are about 52 to 60 inches in length by 30 to 32 inches in width by about 40 inches in height.Walk-in bathtubs are usually made to fit within the spaces built for standard-height bathtubs. A typical size is 52 to 60 inches long by 30 to 32 inches wide. There are different models available.