20x25x5 (19.75x24.25x4.75) Carbon Odor Block Aftermarket Trion Air Bear Replacement Filter (2 Pack) Fits: Trion Air Bear 229990-102, 255649-002, 255649-102, 229990-002, 349447-109, and 453000-001, Trion Air Bear Right-Angle 447380-002, Trion Air Bear Supreme (2000) 455602-001 and 455602-019, Trion Air Bear 2000, Air Bear Classic, Air Bear Plus 2000. Nominal size 20 x 25 x 5. Actual size (H) 19 3/4 x (W) 24 1/4 x (D) 4 3/4. Package contains 2 Filters. This is an aftermarket filter.