Large capacity steamer ovens offer a cost-effective and convenient alternative to a "traditional" counter model Steamer. No water line, no drain line or vent hood to worry about. And according to research conducted at Cornell University's Food Science Lab, cooking with Panasonic Microwave Ovens/Steamers retains up to seven times more water-soluble nutrients than conventional methods. Panasonic's two models are the only products large enough to hold two full-size, 4-inch deep steam table pans, and feature an exclusive heating system for faster cooking and reduced energy bills.