Generalaire 990-13 Evaporator Pad Features: The aluminum evaporator material is enclosed in a heavy wire frame and channeling. Its super absorbent coating allows for maximum water distribution. Specifications: Size: 9 3/4″W x 11 3/4″H x 1 1/2″D For use with these models: Generalaire: SL-16 1137 709 1040/1042