2 Pack, 2 Air Filters Plus 2 Pre-Filters for Shindaiwa Air Filter 68900-82120, A226000530, Pre-Filter 68900-82320 2 Quality Aftrmarket Air Filters and 2 Pre-Filter. Air Filters Replaces Shindaiwa 68900-82120 or A226000530 Pre-Filters Replaces Shindaiwa 68900-82320 Width: 3-3/8", Length: 5", Height: 1"