An apparatus and method for multiple symmetrical divisional gas distribution providing a mounting plate, a plurality of manifolds coupled to the mounting plate, a center purge block coupled to the mounting plate and the plurality of manifolds, a plurality of reactant distribution blocks, wherein each reactant distribution block is stacked atop each other to form a reactant distribution block stack, wherein the reactant distribution block stack sits atop the center purge block, a coupling mechanism to secure the plurality of reactant distribution blocks of the reactant distribution block stack together; and a top cap coupled to the reactant distribution block stack and the coupling mechanism.