Fits 8" UltraCool, ADA/ASA 50 & 51 or 70 & 71, ComfortCool, and SI700, single inlet cooler. Engineered for optimal performance and longevity. Long life, high air velocity, energy efficient, and consistent performance. Cellulose base impregnated with plastic resins and anti-rot agents. Heavier paper holds more water and lasts longer. Durable and easy to install. Limited 1 year warranty.