Ferno Ille Hi-Lo Jr. Whirlpool. The 12 gallon tank adjusts from the floor to arm height, 17 3/4" to 33 1/2" (44.5–85cm), for treatment of ankles and feet, wrists, hands and elbows. A 1/2 hp pump powers two directionally adjustable hydro jets for precisely mixing the flow of water and air. Separate drain system pumps water into a sink or stand pipe, and an additional valve drains any remaining water from the jets and pump. Includes four locking casters. Inside tank dimensions: 23" x 19" x 13 1/2" (58 x 48 x 34cm). Overall dimensions: 38"H x 23"W x 37" to 52 3/4"H. UL listed. Latex free