Abstract: Device for fixing an object on a support formed by spaced parallel edges, forming an insertion face for the insertion of the device between those edges, an opposite face to the insertion face and a rim, has two opposite sides each co-acting with one of the edges of the support, a lateral stop on each side which is fixed and faces the fim facing the support, a flexible clip presses against the insertion face of the corresponding edge of the support, a rigid clip is arranged against the opposite face and a ratching and locking member locks the device on the support on one of the sides.