The holes on the plates are staggered. Now the holes on the "End Plates" (HDPE) are centered and correspond to the holes on the plates. Meaning if the holes on the plates are 1/4" from the gasket the hole on the end plates are 1/4 from the gasket and centered. I am not sure what the production is at that amps, I mix my solution to 1 lb. per 1 gl. of distilled water, at that mixture it will promote 25-30 to that configuration, hence each each will use 10-15 amps. Last I tested my system on my truck it produce 1/2 LPM at 12 seconds.