20x22x0.5 (19.5 x 21.5 x 0.5) AccumulairA (R) Emerald 1/2-Inch Filter (APR 450)

20x22x0.5 (19.5 x 21.5 x 0.5) AccumulairA (R) Emerald 1/2-Inch Filter (APR 450)

20x22x0.5 (19.5 x 21.5 x 0.5) AccumulairA (R) Emerald 1/2-Inch Filter (APR 450)

AccumulairA (R) Emerald MERV 6 8 times more efficient than fiberglass filters Durable construction that will not warp or leak under normal operating conditions Excellent for high-velocity systems and maximum airflow Lasts up to three months

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