About This The MERV 11 HVAC Air Filter captures unwanted particles and helps maintain optimal airflow in your home. Traps particles such as pollen, household dust, dust mite debris, carpet fibers, lint, pet dander and more. Durable construction with a pleated surface with electrostatic charge and dual wire backing attracts particles to the filter and resists moisture. Arrows on the frame indicate the direction of air flow, allowing for quick and easy installation. Save on energy costs and avoid wear and tear on your heating and cooling system by changing filters regularly. A delay in filter replacement can limit air flow, causing a reduction in the performance of your system. Overview Brand : Frigidaire Material : Polyester Product Dimensions : 21"L x 2.5"W x 21"Th MERV Rating : 11 Compatible Devices : Air Conditioner, Furnace, Heat Pump UPC : 012505479229 Number of Items : 2 Manufacturer : Frigidaire Product Grade : Like New Unit Count : 1.0 Count