described are novel systems for electrodeposition of paint on counter - electrodes , and membrane electrode assemblies for incorporation into such systems . in certain embodiments of the invention , electrode enclosures such as c - shaped or box - shaped enclosures include membranes sealed to secondary structural members by bonding . in other embodiments , membrane electrode cells having bumpers are mounted within paint baths in a manner wherein the bumpers are forcibly biased against the exterior wall of the bath , thereby stabilizing the position of the cells . in still further embodiments , tubular electrode cells are provided with internal valves allowing the release of liquid trapped within the tubular electrodes into the membrane shell . in this manner , removal of the electrodes for maintenance , replacement or other purposes is facilitated .