The PERFECTPLEAT HC M8 27-1/2+29-1/2+1 by AAF International is a high-efficiency air filter designed for demanding HVAC applications. Measuring 27-1/2 inches by 29-1/2 inches with a depth of 1 inch, this filter features a pleated design that maximizes surface area for enhanced filtration. Constructed from durable materials, it captures a wide range of airborne particles, improving indoor air quality. This filter complies with industry standards, making it suitable for both commercial and residential systems. Its easy installation ensures reliable performance and maintenance.