Smart Pool 7i Wall Climbing Robotic Pool Cleaner (Discontinued by Manufacturer) Cleans and brushes floor and walls, revolutionary lightweight design, recommended for in ground pools up to 20' x 40' x 8' Deep Direct-drive motor for greater traction and serviceability, brush-to-port suction for thorough vacuuming of acorns, leaves and fine debris All surface cleaning for vinyl liner, fiberglass and concrete pools, quick-drain system for lightweight removal from pool