New Laguna Max-Flo Waterfall and Filter Pumps Smart Pump Technology (SPT) - 4280 Anti-leaf ribs to assure continuing suction. Unique two-level suction capability, through upper and lower casing, for maximum water flow. Cage openings from 1/4" to 5/16" in diameter according to the pump size for solids handling capability. Ergonomic pump handle for a safe grip and easy transportation. Click-fit Connections.