Trion brand air filter box of 3 size 20x25x5.
Filter rating is MERV 8
Actual size is 19-3/4" x 24-1/2" x 4-7/8".
If your air filter measures less than 4-7/8" this filter will not fit your cabinet. The 20x25x5 dimensions are considered nominal size. Many manufacturers advertise this size filter with actual dimensions from 4-3/8" thru 5-1/4".
Part numbers that have been used over the years by Trion for this filter are:
229990-102, 229990-002, 255649-102, 255649-002
Shipping rate for continental United States. Contact us for rates to other locations.