A device for mounting a cabinet to a wall, comprising: an elongate wall rail , arranged to extend substantially horizontally and having a vertically upwardly operative support , and an elongate cabinet rail , arranged to extend substantially horizontally and having a vertically downwardly operative support , the device further comprising: a recess formed in one of the supports , a protrusion formed in the other one of the supports , and an angle bracket , wherein a first flange of the angle bracket is attached to the cabinet rail and a second flange of the angle bracket is attachable to a vertical frame portion of the cabinet , the protrusion being configured to engage the recess when the support of the cabinet rail is brought into engagement with the support of the wall rail characterized in that the first flange comprises one or more securing holes to secure the angle bracket to the wall rail , and a fastener engages the securing hole of the angle bracket mounted to the cabinet, a securing hole formed in the cabinet rail and a securing hole formed in the wall rail , such that the fastener extends through the cabinet rail and directly engages the securing hole in the wall rail . an elongate wall rail , arranged to extend substantially horizontally and having a vertically upwardly operative support , and an elongate cabinet rail , arranged to extend substantially horizontally and having a vertically downwardly operative support , the device further comprising: a recess formed in one of the supports , a protrusion formed in the other one of the supports , and an angle bracket , wherein a first flange of the angle bracket is attached to the cabinet rail and a second flange of the angle bracket is attachable to a vertical frame portion of the cabinet , the protrusion being configured to engage the recess when the support of the cabinet rail is brought into engagement with the support of the wall rail characterized in that the first flange comprises one or more securing holes to secure the angle bracket to the wall rail , and a fastener engages the securing hole of the angle bracket mounted to the cabinet, a securing hole formed in the cabinet rail and a securing hole formed in the wall rail , such that the fastener extends through the cabinet rail and directly engages the securing hole in the wall rail . a recess formed in one of the supports , a protrusion formed in the other one of the supports , and an angle bracket , wherein a first flange of the angle bracket is attached to the cabinet rail and a second flange of the angle bracket is attachable to a vertical frame portion of the cabinet , the protrusion being configured to engage the recess when the support of the cabinet rail is brought into engagement with the support of the wall rail characterized in that the first flange comprises one or more securing holes to secure the angle bracket to the wall rail , and a fastener engages the securing hole of the angle bracket mounted to the cabinet, a securing hole formed in the cabinet rail and a securing hole formed in the wall rail , such that the fastener extends through the cabinet rail and directly engages the securing hole in the wall rail . <EOS>