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21x21x4 Air Filter

Nominal Size

Actual Size

Merv Rating

Bulk Quantity Pricing

4	6	12	48	72	120

Quantity

21x21x4

20.5x20.5x4

MERV 8

$24.07

$21.66

$21.18

$20.46

$18.05

$16.85

21x21x4

20.5x20.5x4

MERV 13

$22.87

$20.58

$20.13

$19.44

$17.15

$16.01

21x21x4

20.5x20.5x4

MERV 11

$36.78

$33.10

$32.37

$31.26

$27.59

$25.75

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MERV Rating

Nominal Length

Nominal Width

Nominal Depth

21x21x4 Air Filter

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