Whynter Activated Carbon Replacement Filter Portable Air Conditioner Models ARC-14S, ARC-14SH & ARC-141BG (ARC-CF-14S) Replacement filter for Whynter Portable Air Conditioner models ARC-14S, ARC-14SH & ARC-141BG Activated carbon removes chemical fumes, toxic gases, smoke, pet and other odors Collects dust particles Helps prevent bacteria build-up