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21x23x4

  • Home Select

    Pleated | MERV Rating 8
    21 x 23 x 4 MERV 8 Pleated Air Filter
    Get your First Filter Free with Auto Delivery
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    • Actual Size: 20 7/8" x 22 7/8" x 3 3/4"
    • Product #: P80S.042123
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    Pleated | MERV Rating 11
    21 x 23 x 4 MERV 11 Pleated Air Filter
    Get your First Filter Free with Auto Delivery
    View Terms and Conditions
    • Actual Size: 20 7/8" x 22 7/8" x 3 3/4"
    • Product #: P15S.042123
  • Home Ultimate

    Pleated | MERV Rating 13
    21 x 23 x 4 MERV 13 Pleated Air Filter
    Get your First Filter Free with Auto Delivery
    View Terms and Conditions
    • Actual Size: 20 7/8" x 22 7/8" x 3 3/4"
    • Product #: P25S.042123

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