Smartpool PT9i Robotic Climbing In Ground Scrubber is made for inground pools up to 20 feet x 40 feet long and 8 feet deep. Its revolutionary lightweight design cleans and scrubs floors and walls up to the waterline. Smartpool's Quick-Drain technology empties the cleaner in seconds, allowing you to quickly and easily remove it from your pool. The brush-to-port feature thoroughly vacuums everything from acorns, leaves to other kids of fine debris.