Waring - WPO350 - Double Deck Countertop Pizza Oven. Countertop pizza oven Double deck 23 in (W) x 19 3/4 in (H) x 18 in (Depth) Temperature settings from 280°F - 600°F 3.5-inch-high chamber opening 240V/60Hz/15A 3500W NEMA 6-20P UL listed NSF certified.