B4-Fresh Replacement Filter, Compatible with Alen BreatheSmart Flex and 45i Air Purifier, H13 Grade High Efficiency Air Filtration with 12 oz. Activated Carbon Pellets, 1-Pack

COMPATIBILITY: Specifically designed to be fully compatible with Alen BreatheSmart Flex and 45i air purifier model as a direct replacement filter. Compares to Part # B4-Fresh (Old Part # FL40-Silver-Carbon). DO NOT fit any other models | THREE-STAGE FILTRATION: Features pre-filter, H13 Grade main filter, and activated carbon filter for comprehensive air purification | PREMIUM FILTER GRADE: H13 grade air filtration system captures 99.9% of harmful airborne particles with superior efficiency for cleaner and fresher indoor air | HIGH-EFFICIENCY: Activated Carbon Filter removes heavy household odors from pets, cooking, smoking, wildfires, and harmful VOCs with the power of more than 12 oz high-efficiency activated carbon pellets | PACKAGE CONTENTS: Includes One (1) complete set of replacement filters (pre-filter, main filter, and activated carbon), PLUS (3) extra replaceable Pre-Filters for added value