Wicking Pad for AirWave Cooler
The cardboard filter itself is terrific and fits my North Storm 30-L evaporative cooler perfectly. This is the only website where I could find this replacement filter. I took off two stars because they shipped the filter in an envelope rather than a box and it arrived smashed on one side about 6 or 7 inches. I think I can still make it work, but there is no excuse for shipping something fragile in an envelope with no padding.