Pre-Filter / Shindaiwa 68242-82310Pack Size:1Shindaiwa 68242-82310, Shindaiwa A226000540J. Thomas 68242-82310, NHC 207-0075Shindaiwa EB802, EB802RT, EB8520 and EB8520RTWidth: 3 ", Length: 4 1/2 ", Height: 7/16 "