SEI furnishes both segmented and one-piece collecting plates. Experience has shown that these types of plates are mechanically, structurally and aerodynamically the best plates for a precipitator. Structurally, they stand up well to heavy repeated rapping. Their roll formed designs resist bowing and resultant misalignment due to temperature and rapping. When properly rapped, the collected dust is effectively sheared from the plate over its entire length and falls into the collection hopper with minimum re-entrainment.