Frame adapter for a lateral wall frame of a drawer, comprising a connecting fitting for detachably fixing a panel-shaped furniture item, in particular a front panel, to a lateral wall frame of a drawer, which is aligned in an angular manner thereto, preferably in a rectangular manner, wherein the connecting fitting comprises a carrier device and a locking device, wherein the carrier device is provided with an abutment that is in detachable engagement with the locking device, wherein the locking device has the following features: a) a base angle as a base unit, wherein the base angle has a mounting leg and a mounting base section extending perpendicularly to the upper mounting surface in the installation position; b) to which mounting base section a locking lever loaded by a spring is movably linked, which is movable under spring force from a release position to a locking position and, against the spring force, from the locking position back to the release position; c) wherein the locking lever further has a hook section which is used to engage behind the corresponding abutment, preferably a pin of the carrier device, in a locking position on the carrier device; d) wherein the locking lever is linked with a pivot bearing to the mounting base section; e) wherein a release lever is provided which can be actuated manually; wherein f) the mounting base section is further mounted or formed on the frame adapter of the lateral wall frame, and wherein the release lever that can be actuated manually is linked to the locking lever and to the mounting base section, and extends up into a free space in the frame adapter, so that it can be actuated in the free space by hand by a user, characterized in that g) the mounting leg is mounted on a mounting surface of a leg of the frame adapter, said mounting surface being the upper one in the installation position, wherein the release lever extends through an opening in the mounting surface up into the free space in the frame adapter. a) a base angle as a base unit, wherein the base angle has a mounting leg and a mounting base section extending perpendicularly to the upper mounting surface in the installation position; b) to which mounting base section a locking lever loaded by a spring is movably linked, which is movable under spring force from a release position to a locking position and, against the spring force, from the locking position back to the release position; c) wherein the locking lever further has a hook section which is used to engage behind the corresponding abutment, preferably a pin of the carrier device, in a locking position on the carrier device; d) wherein the locking lever is linked with a pivot bearing to the mounting base section; e) wherein a release lever is provided which can be actuated manually; wherein f) the mounting base section is further mounted or formed on the frame adapter of the lateral wall frame, and wherein the release lever that can be actuated manually is linked to the locking lever and to the mounting base section, and extends up into a free space in the frame adapter, so that it can be actuated in the free space by hand by a user, characterized in that g) the mounting leg is mounted on a mounting surface of a leg of the frame adapter, said mounting surface being the upper one in the installation position, wherein the release lever extends through an opening in the mounting surface up into the free space in the frame adapter.