Hamilton Beach 04211 TrueAir Compact Plug-Mount Odor Eliminator Plug-mount odor eliminator offering continuous absorption Internal fan pulls in unwanted odors while projecting fresh air Includes specially-formulated carbon filters that last up to 120 days Built-in wheel indicator communicates filter replacement timing Compact size measures 4.0 by 6.0 by 4.0 inches; 1-year warranty