Abstract: A pulsing header apparatus for cleaning bag-type or cartridge-type fabric filters having a pulsing header and at least one blow tube attachment protruding from one side of the pulsing header. The pulsing header and blow tube attachment are cast, molded, or formed together a unitary component, defining a modular header. A port for attaching a pulsing valve is provided on a side opposite that of the blow tube attachment. The modular headers can be connected end to end using bolts to form a complete pulsing header apparatus.