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Wooden frame of dimensions to put a plastic excluder grid in a hive of supers. Ideal to put plastic grids reference COLMPR_001, COLMPR_002, COLMPR_003 (note must be cut to 485x400mm). With this frame a few millimeters of height between the frames of the rearing and raising chamber is achieved and the propolisation of the plastic grid is somewhat avoided. Plastic grid not included.