Aftermarket modifications from the stock unit as shown in the manufacturer specification sheet/manual. (I.e. Filters, Pumps, Screens, Fans, Sensors, Baffles, Fill Material, etc.)
The control/electrical box is recommended to be installed near the cooling tower. (Better pricing with less control boxes)
Control Box Approximate Sizes and Weights - LxWxH(in), Weight(lbs), Approximate Cell Size Tonnage
16"x10"x6", 15lbs, 200Tons
20"x14"x6", 20lbs, 400Tons
24"x20"x8", 30lbs, 800Tons
36"x24"x10", 50lbs, 1200Tons