The fiberglass grating cover plate is an additional layer of fiberglass cover plate added to the grating plate. The main difference between it and fiberglass grating is reflected in its appearance. The fiberglass grating is a grid shaped hollow panel, while the fiberglass grating cover plate is a closed type with a layer of cover added on top of the fiberglass grating plate. Unlike the molding and extrusion manufacturing processes of grille panels, fiberglass grille cover panels belong to the hand layup process, also commonly known as skin. This hand layup process is used to manufacture various fiberglass products, such as common fiberglass fans, fiberglass sculptures, fiberglass trash cans, fiberglass septic tanks, and so on. There are usually two methods for manufacturing fiberglass grating cover plates. The first method is to manufacture the cover plate on the surface of the grating plate before it is removed from the molding equipment. Another approach is to place the removed grille panel in another operating channel and manufacture the cover plate. There are strengths and weaknesses between the two.