Evaporative Cellulose Cooling Pad CeldeK-7090, Cooler Pad-7050 CELdek 7090 High Efficiency, Maximum Cooling and Humidification Low Pressure Drop,Less Costly to Operate,Low Maintenance,Self Cleaning Flute Design Specially Treated, Algae Resistant Substrate Routine Maintenance Can Be Performed While the System is Operating Long Service Life, Engineered to Resist Deterioration, Optional MI-T-edg Edge Protection,for Longer Life Product Description CELdek Features: â?¢ High Cooling Efficiency, High Face Velocity, Self-Cleaning Design Low Pressure Drop Simple to Maintain