The Stainless Steel Evap System for 4" Pads is a durable and efficient evaporative cooling system designed for commercial grower applications. This system features high-quality stainless steel construction; The stainless steel trough has enough water capacity that no sump is required, thus producing a completely self-contained system. The system utilizes 6-inch evaporative pads and a powerful water pump to cool large spaces effectively. With its energy-efficient design, The Stainless Steel Evap System for 6" Pads is a reliable, effective way to regulate temperature and humidity levels in Greenhouse spaces.