Abstract: A drain pan for radiators and cooling systems includes a base panel which is molded or otherwise formed into a coffer shape defined by upstanding side walls extendings continuously about the perimeter of the base panel. The side walls include an inwardly extending shoulder spaced slightly above the base panel to support a grid formed of a plurality of upwardly extending panels. The upstanding panels are equally spaced and oriented parallel to perpendicular axes to form a rectilinear matrix. The base panel includes concave recesses at the corners of the coffer to accommodate wheels or rollers affixed thereto.