High speed convection oven

A convection heating apparatus capable of providing effective, high speed cooking without the assistance of microwave energy. The oven apparatus includes an exterior cabinet, a door, and a cooking chamber having interior side walls, a back wall, and a lower jet plate. The oven further includes a blower for circulating gas through the lower jet plate into the cooking chamber. In addition, the oven includes a product support disposed within the cooking chamber above said lower jet plate. The product support is disposed on a rail that is positioned to hold the lower jet plate in place when air is circulated therethrough. Optionally, the oven further includes an upper jet plate disposed within the cooking chamber above the product support. Temperature controlled gas is circulated through the upper jet plate toward the product support and any food product disposed on the product support. The oven may also include means for imparting movement to the product support during cooking operations in order to provide a more even cooking of a food product. A catalytic converter material is disposed downstream from the blower and upstream from a return plate which controls the direction of gas flow from the cooking cavity and protects the catalytic converter material.