TRAPS AND NEUTRALIZES TOBACCO ODORS: Keep your home fresh and clean by replacing your Hamilton Beach TrueAir filters. These carbon filters were specially formulated to neutralize pet odors. FITS TRUEAIR ODOR ELIMINATORS: Carbon Replacement Filter fits Hamilton Beach TrueAir models 04384, 04532GM, 04530G, 04530GM & 04531GM LONG LASTING 3-PACK: This package contains 3 filters, made to last up to 90 days. EASY TO INSTALL: Replacing your Hamilton Beach True Air filters is easy. Simply, place the filter in the unit, fitting the notched corner of the filter around notched edge of the odor eliminator.