21 inch L x 21 inch W x 22-1/2 inch H Return Air Filter Box with Filter Rack

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Improve your HVAC system's performance with this durable Return Air Filter Box with Filter Rack, designed to fit a C cabinet air handler. Constructed from 24 gauge galvanized steel , this air box measures 21.13 inch L x 21 inch W x 22.5 inch H and supports a 20x20x1 filter for efficient air filtration and airflow. Ideal for residential and commercial HVAC applications. Show more