Dust filtration: effectively blocking dust, hair, and other substances, keeping the interior of the air conditioner clean, and improving indoor air quality. Washable for repeated use: Washable for repeated use without frequent replacement, saving money and being environmentally friendly. No impact on air conditioning airflow: The highly breathable structure does not obstruct airflow and does not affect the cooling effect of the air conditioning. Easy and fast installation: No tools required, easy to install, simply cover the air inlet for use The fine mesh structure effectively traps airborne dust, pollen, pet hair and floating particles, keeping indoor air fresh. Engineered for low air resistance —cooling and heating performance stays unaffected., Manufacturer: SERENEPEAK