An oven comprising: - an oven body having sidewalls that extend substantially perpendicular to a surface on which the oven is intended to be supported; - a cooking chamber disposed in the oven body and configured to receive a food product; - a radio frequency heating system configured to provide RF energy into the cooking chamber; - a door; and - an air circulation system configured to provide air for cooling, wherein the air circulation system comprises an inlet filter support structure through which cooling air for cooling is drawn prior to circulation by a cooling fan; wherein the inlet filter support structure supports at least a first side filter disposed below one of the sidewalls and disposed at an angle relative to the one of the sidewalls, and a second side filter disposed below an opposing one of the sidewalls and disposed at the angle relative to the opposing one of the sidewalls, wherein the first and second side filters (410, 420) are installed into receiving tracks that extend in a direction substantially parallel to each other, characterized in that the radio frequency heating system is configured to provide RF energy using solid state electronic components and the air circulation systems is configured to provide cooling air for said solid state electronic components; that the inlet filter support structure supports a front filter disposed below the door of the oven, and that the front filter and the first and second side filters (410, 420) are, each at least partially, retained in an installed position by magnets (500, 600), and that the receiving tracks extend substantially perpendicular to a direction of extension of the front filter, whereas the front filter is directly inserted into a filter receiver assembly defined by sidewalls and a bottom wall that lie substantially parallel to and face a bottom face and end faces of the front filter, whereas no wall is facing the top face of the front filter, wherein the first and second side filters (410, 420) include feedback mechanisms (610, 620) configured to indicate a relative location of the first and second side filters (410, 420) relative to the receiving tracks. - an oven body having sidewalls that extend substantially perpendicular to a surface on which the oven is intended to be supported; - a cooking chamber disposed in the oven body and configured to receive a food product; - a radio frequency heating system configured to provide RF energy into the cooking chamber; - a door; and - an air circulation system configured to provide air for cooling, wherein the air circulation system comprises an inlet filter support structure through which cooling air for cooling is drawn prior to circulation by a cooling fan; wherein the inlet filter support structure supports at least a first side filter disposed below one of the sidewalls and disposed at an angle relative to the one of the sidewalls, and a second side filter disposed below an opposing one of the sidewalls and disposed at the angle relative to the opposing one of the sidewalls, wherein the first and second side filters (410, 420) are installed into receiving tracks that extend in a direction substantially parallel to each other, characterized in that the radio frequency heating system is configured to provide RF energy using solid state electronic components and the air circulation systems is configured to provide cooling air for said solid state electronic components; that the inlet filter support structure supports a front filter disposed below the door of the oven, and that the front filter and the first and second side filters (410, 420) are, each at least partially, retained in an installed position by magnets (500, 600), and that the receiving tracks extend substantially perpendicular to a direction of extension of the front filter, whereas the front filter is directly inserted into a filter receiver assembly defined by sidewalls and a bottom wall that lie substantially parallel to and face a bottom face and end faces of the front filter, whereas no wall is facing the top face of the front filter, wherein the first and second side filters (410, 420) include feedback mechanisms (610, 620) configured to indicate a relative location of the first and second side filters (410, 420) relative to the receiving tracks.