Piper Products Super Systems Oven/Proofer Combo. This unit is designed to bake products in the top oven and proof them in the bottom proofer. It features individually controlled oven decks with natural convection and radiant heat to ensure an even hearth bake. The proofer section has separate heat and humidity controls, with a high-volume blower to circulate air efficiently. Full-view, heat-reflective tempered glass doors allow for energy-efficient sight baking and proofing.