Hi,

The tub is a Kohler drop in acrylic. The tub features a variable air that peculates from the lower two inches . The size is around 60" long, 32" wide and if I remember 18-20" deep. I could locate the catalog number if you like. We installed it for a customer with lower back pain and she said it relived her pain. Thank you for you interest please let me know if I could be of further assistance.

Best regards,

Rich