Filtrete 3WH-STDCW-F02 Standard Capacity Whole House Carbon Wrap Replacemen Cleans rooms up to 160 sq ft - Bedroom Size Advanced Filtrete filtration technology effectively captures 99.9% of airborne particles and allergens Design allows more clean air to flow through your room Quiet operation Filter change indicator senses the particle accumulation on the filter, taking the guesswork out of filter change