Middleby Marshall PS570 Specifications: Pre-Owned Middleby PS-570 Conveyor Ovens. The PS-570 features a 70" long cooking chamber, a 32" Wide conveyor belt, and a patented "Jet Sweep" impingement process that delivers constant heat to the chamber. Stainless steel front, top and sides. Front loading window with cool handle design allows products with different baking times to be cooked consistently regardless of loading. The PS-570 comes in both Gas and Electric Models. Availability varies, see drop-down for current availability. Save Thousands. ! Get 2 PS-570 Ovens (double stack ) for $16,460! Get 3 PS-570 Ovens (triple stack ) for $21,380! (*Oven stand included with triple stack purchase). *Want this item reconditioned or remanufactured? Call for special pricing!