System for securing shelf accessories to a shelf, comprising - a front securing device, which is configured for fixing to the front edge of a shelf, - a rear securing device comprising an elongated profiled element having a cross-sectional profile, with a lower base plate, a first arm projecting upwards from the base plate, and a second arm, with a rear end, projecting rearwards from the first arm and being configured for fixing on top of a shelf substantially parallel with the longitudinal direction of the shelf, and - a shelf accessory having a front engagement member configured for engagement with the front securing device, as well as a rear engagement member comprising a forward projecting third arm configured for engagement with the rear securing device and comprising a front end, which third arm is configured to, in mounted position, be received between the base plate and the second arm of the profiled element of the rear securing device, wherein - the rear securing device and the rear engagement member are configured to allow rotation of the shelf accessory about an axis which is substantially parallel with the longitudinal direction of the profiled element when the rear engagement member is in engagement with the rear securing device characterized in that - the rear securing device comprises a first stop face which is constituted by a forward-facing surface of the first arm, - the rear engagement member comprises a second stop face which is constituted by a rearward-facing surface disposed in front of the front end of the third arm, wherein the distance between the second stop face and the front end of the third arm is less than the distance between the first stop face and the rear end of the second arm and in that - said first and second stop faces are configured to be brought into and out of mutually overlapping relation in the vertical direction by rotating the shelf accessory about said axis, such that the first and second stop faces, in mutual contact, prevent the rear engagement member from being disengaged from the rear securing device when the shelf accessory is held substantially parallel with the top side of the shelf and the first and second stop faces thereby are vertically overlapping, and to allow the rear engagement member to be released from the rear securing device when the front end of the shelf accessory has been lifted such that the shelf accessory has assumed an angle to the top side of the shelf and the first and second stop surfaces thereby are vertically non-overlapping. - a front securing device, which is configured for fixing to the front edge of a shelf, - a rear securing device comprising an elongated profiled element having a cross-sectional profile, with a lower base plate, a first arm projecting upwards from the base plate, and a second arm, with a rear end, projecting rearwards from the first arm and being configured for fixing on top of a shelf substantially parallel with the longitudinal direction of the shelf, and - a shelf accessory having a front engagement member configured for engagement with the front securing device, as well as a rear engagement member comprising a forward projecting third arm configured for engagement with the rear securing device and comprising a front end, which third arm is configured to, in mounted position, be received between the base plate and the second arm of the profiled element of the rear securing device, wherein - the rear securing device and the rear engagement member are configured to allow rotation of the shelf accessory about an axis which is substantially parallel with the longitudinal direction of the profiled element when the rear engagement member is in engagement with the rear securing device characterized in that - the rear securing device comprises a first stop face which is constituted by a forward-facing surface of the first arm, - the rear engagement member comprises a second stop face which is constituted by a rearward-facing surface disposed in front of the front end of the third arm, wherein the distance between the second stop face and the front end of the third arm is less than the distance between the first stop face and the rear end of the second arm and in that - said first and second stop faces are configured to be brought into and out of mutually overlapping relation in the vertical direction by rotating the shelf accessory about said axis, such that the first and second stop faces, in mutual contact, prevent the rear engagement member from being disengaged from the rear securing device when the shelf accessory is held substantially parallel with the top side of the shelf and the first and second stop faces thereby are vertically overlapping, and to allow the rear engagement member to be released from the rear securing device when the front end of the shelf accessory has been lifted such that the shelf accessory has assumed an angle to the top side of the shelf and the first and second stop surfaces thereby are vertically non-overlapping.