Frost King combination pack filter and weatherseal. Made of open cell foam, filter is 15'' H. x 24'' W. x 1/4'' T. Air conditioner filter removes dust and pollen from the air inside the home, helping the air conditioner unit work more efficiently. The foam air conditioner weatherseal is made of compressible open cell polyurethane foam. It seals out drafts, dust, and rain around window air conditioner unit. Also acts as an efficient cushion to help reduce noise and vibration. Weatherseal measures 1-1/4'' W. x 1-1/4'' T. x 42'' L.