Photo 1 of Aerostar 19 7/8x21 1/2x1 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 4 Pack (Actual Size: 19 7/8" x 21 1/2" x 3/4")

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Photo 1 of Aerostar 19 7/8x21 1/2x1 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 4 Pack (Actual Size: 19 7/8" x 21 1/2" x 3/4") Photo 2 of Aerostar 19 7/8x21 1/2x1 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 4 Pack (Actual Size: 19 7/8" x 21 1/2" x 3/4")