GREATING, AND METHOD FOR MANUFACTURING THE MATRIX OF GREATING

摘要

PURPOSE: A grating and a manufacturing method of a lattice structure of a grating are provided to improve productivity by reducing works and to enable a user to stably install a filter. CONSTITUTION: A grating comprises a frame, a bearing beam(22), and a lattice structure. Insertion grooves(22a) are formed at regular intervals according to a longitudinal direction of the bearing beam and are arranged to upwardly face. A flat plate-shaped filter(30) is mounted on the bearing beam. The cross bars(24) are arranged to the insertion grooves. The cross bar is pressurized and is compulsorily pressed with the filter into the insertion groove.