The MERV 11 Cartridge Filter is engineered for superior air filtration, capturing a wide range of airborne contaminants. With a cellulose/polyester blend, this filter offers excellent durability and efficiency, making it suitable for both residential and commercial HVAC systems. Measuring 80/20, it provides a high level of filtration, ensuring cleaner air quality. This filter is easy to install and replace, fitting standard cartridge filter housings. Its MERV 11 rating indicates its capability to trap particles as small as 1 micron, making it an essential choice for allergy sufferers and those seeking improved air quality.