Friedrich Pre-Filter for C-90B Air Purifier
Award winning air purifier which never needs costly HEPA filter replacements. Excellent at particle and smoke removal, this unit filters your air at the lowest possible cost. The C-90B is an improvement on the older C-90A model - providing coverage of a larger area and improved clean air delivery rates (CADR). Prefilter and carbon filter included. Effectively covers over 500 square feet.