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21 1/2 x 23 1/2 x 1 Air Filter

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    Fiberglass | MERV Rating 6
    21 1/2 x 23 1/2 x 1 MERV 6 Fiberglass Air Filter
    Get your First Filter Free with Auto Delivery
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    • Actual Size: 21 1/2" x 23 1/2" x 3/4"
    • Product #: D50S.0121H23H
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    Pleated | MERV Rating 8
    21 1/2 x 23 1/2 x 1 MERV 8 Pleated Air Filter
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    • Actual Size: 21 1/2 x 23 5/16 x 1"
    • Product #: P80S.0121H23H
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    Pleated | MERV Rating 11
    21 1/2 x 23 1/2 x 1 MERV 11 Pleated Air Filter
    Get your First Filter Free with Auto Delivery
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    • Actual Size: 21 1/2" x 23 1/2" x 3/4"
    • Product #: P15S.0121H23H
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    Pleated | MERV Rating 13
    21 1/2 x 23 1/2 x 1 MERV 13 Pleated Air Filter
    Get your First Filter Free with Auto Delivery
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    • Actual Size: 21 1/2" x 23 1/2" x 3/4"
    • Product #: P25S.0121H23H
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