The Champion Elite 4000RLD4 was engineered to offer powerful cooling in a durable, low-profile design, and boast a best-in-industry efficiency ratio per dollars spent. The GREENGUARD Gold Certified 4 in. media maximizes air flow and performance, resulting in an efficiency rating up to 90%. This energy-saving innovation packs a big punch within its sleek, galvanized steel cabinet that stands more than 3 in. shorter than a standard cooler. The new low-profile design does not obstruct the line of sight above the roof line improving the appearance of the space it serves to cool. Its low profile design also takes up less space during transport. This high-efficiency design can help increase the air's saturation level. Why does increased saturation matter; When water vapor is introduced into hot, arid spaces, the vapor absorbs the heat, cooling the air around it. By increasing the saturation, you are able to decrease temperatures up to an additional 5°F to 8°F and cool the space more efficiently. Additionally, elevated saturation levels can aid in decreased fan speeds, leading to less energy consumption. Higher levels may also lessen the amount of water required to effectively cool, and reduce the stress on the coolers motor, making the benefits of increased saturation even greater. Color: Cool Sand.