High Flow Edition (Black)The Spray Box High Flow Edition is the term used to describe our innovative new line of products. Our High Flow Edition wash down systems are 3x more powerful than our original models. We accomplished this by upgrading the water pump. The High Flow Editions open water flow rate at the spray nozzle is now 3 gallons per minute. The open flow rate of the original Spray Box is around 1 gallon per minute. We also had to increase the size of the coil hose