Fellowes AeraMax Pro AM3 or AM4 Carbon 3/8" Filter w/ Pre-filter - 4 PK - Activated Carbon - For Air Purifier - Remove Dust, Remove Odor, Remove Volatile Organic Compound - 14.38" (365.25 mm) Height x 13.75" (349.25 mm) Width x 2.25" (57.15 mm) Depth - Carbon - 4