AAF International 20 in. x 30 in. x 1 in. Fiberglass Air Filter

The AAF International 20 in. x 30 in. x 1 in. Fiberglass Air Filter provides dependable air filtration and system protection for residential and light commercial heating and cooling equipment. Built with an environmentally friendly, one-piece chipboard frame, this filter eliminates corner separation to maintain structural integrity during operation. Engineered for efficiency and convenience, the self-retaining fiberglass media pack is bonded directly to the frame using a resilient hot-melt adhesive around the perimeter on both upstream and downstream sides, eliminating the need for metal retainers while ensuring dependable airflow and debris capture.