Replacement True HEPA filter for Sears Kenmore Whispure 83234, 83353, and 83374- 1183051, Low cost aftermarket replacement HEPA filter for Whirlpool models AP150, AP250, EHT201VKWR4, High efficiency filtration captures 99.97% of airborne irritants Helps effectively filter airborne irritants such as smoke, pollen and dust For maximum filtration performance, replace filter every 12 months Chipboard Frame