A manifold assembly for use with a fuel cell stack (200, 202), said manifold assembly comprising: an external anode exhaust manifold for abutting and sealingly enclosing an anode outlet face of the fuel cell stack (200, 202), wherein the manifold comprises: an enclosure for receiving anode exhaust gas from the fuel cell stack (200, 202), the enclosure including: an opening adapted to face the anode outlet face of the fuel cell stack (200, 202) and through which the anode exhaust gas is output from the anode outlet face into the enclosure when the manifold abuts the anode outlet face, an outer wall opposing the opening, opposing top and bottom walls connected to the outer wall, opposing first and second side walls connected to the outer wall and to the top and bottom walls, and an exhaust outlet formed in the outer wall for outputting the anode exhaust gas from the manifold, and a plurality of baffles (106, 306) disposed in said enclosure, said baffles (106, 306) being configured to control a direction of a flow of the anode exhaust gas flow within the enclosure, wherein each of the plurality of baffles (106, 306) includes first and second opposing ends coupled with the first and second sidewalls of the enclosure, respectively, wherein said baffles (106, 306) are successively disposed along a portion of the height of the enclosure with successive baffles (106, 306) being separated by a vent (107, 107a,107b,107c) or a space, and wherein at least one of the baffles (106, 306) is disposed in the enclosure between the exhaust outlet and the opening of the enclosure so as to control the direction of the flow of the anode exhaust gas received from fuel cells closest to the exhaust outlet to flow around said at least one of said baffles (106, 306). an external anode exhaust manifold for abutting and sealingly enclosing an anode outlet face of the fuel cell stack (200, 202), wherein the manifold comprises: an enclosure for receiving anode exhaust gas from the fuel cell stack (200, 202), the enclosure including: an opening adapted to face the anode outlet face of the fuel cell stack (200, 202) and through which the anode exhaust gas is output from the anode outlet face into the enclosure when the manifold abuts the anode outlet face, an outer wall opposing the opening, opposing top and bottom walls connected to the outer wall, opposing first and second side walls connected to the outer wall and to the top and bottom walls, and an exhaust outlet formed in the outer wall for outputting the anode exhaust gas from the manifold, and a plurality of baffles (106, 306) disposed in said enclosure, said baffles (106, 306) being configured to control a direction of a flow of the anode exhaust gas flow within the enclosure, an enclosure for receiving anode exhaust gas from the fuel cell stack (200, 202), the enclosure including: an opening adapted to face the anode outlet face of the fuel cell stack (200, 202) and through which the anode exhaust gas is output from the anode outlet face into the enclosure when the manifold abuts the anode outlet face, an outer wall opposing the opening, opposing top and bottom walls connected to the outer wall, opposing first and second side walls connected to the outer wall and to the top and bottom walls, and an exhaust outlet formed in the outer wall for outputting the anode exhaust gas from the manifold, and an opening adapted to face the anode outlet face of the fuel cell stack (200, 202) and through which the anode exhaust gas is output from the anode outlet face into the enclosure when the manifold abuts the anode outlet face, an outer wall opposing the opening, opposing top and bottom walls connected to the outer wall, opposing first and second side walls connected to the outer wall and to the top and bottom walls, and an exhaust outlet formed in the outer wall for outputting the anode exhaust gas from the manifold, and a plurality of baffles (106, 306) disposed in said enclosure, said baffles (106, 306) being configured to control a direction of a flow of the anode exhaust gas flow within the enclosure, wherein each of the plurality of baffles (106, 306) includes first and second opposing ends coupled with the first and second sidewalls of the enclosure, respectively, wherein said baffles (106, 306) are successively disposed along a portion of the height of the enclosure with successive baffles (106, 306) being separated by a vent (107, 107a,107b,107c) or a space, and wherein at least one of the baffles (106, 306) is disposed in the enclosure between the exhaust outlet and the opening of the enclosure so as to control the direction of the flow of the anode exhaust gas received from fuel cells closest to the exhaust outlet to flow around said at least one of said baffles (106, 306).