... Pre-filter, ceiling filter, exhaust fibreglass filterRoof PlatesGalvanized steel plates Control system Spraying, heat spraying, baking, time setting, ... H)Plenum Dimension6300×3450×400mm(L×W×H)Basement300mm galvanized steel basement, full grilles made by flat bar and ... clear tempered glass;Generator SettingExhaust air from rear side; galvanized steel molding frame, white coated steel cover.Intake and ...