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13 x 21 1/2 x 4 Air Filter

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    Pleated | MERV Rating 8
    13 x 21 1/2 x 4 MERV 8 Pleated Air Filter
    Get your First Filter Free with Auto Delivery
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    • Actual Size: 12 7/8" x 21 1/2" x 3 3/4"
    • Product #: P80S.041321H
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    Pleated | MERV Rating 11
    13 x 21 1/2 x 4 MERV 11 Pleated Air Filter
    Get your First Filter Free with Auto Delivery
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    • Actual Size: 12 7/8" x 21 1/2" x 3 3/4"
    • Product #: P15S.041321H
  • Home Ultimate

    Pleated | MERV Rating 13
    13 x 21 1/2 x 4 MERV 13 Pleated Air Filter
    Get your First Filter Free with Auto Delivery
    View Terms and Conditions
    • Actual Size: 12 7/8" x 21 1/2" x 3 3/4"
    • Product #: P25S.041321H
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