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18x22x1

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4	6	12	48	72	120

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18x22x1

17.5x21.5x1

MERV 8

$12.73

$11.46

$11.20

$10.82

$9.55

$8.91

18x22x1

17.5x21.5x1

MERV 11

$16.57

$14.91

$14.58

$14.08

$12.43

$11.60

18x22x1

17.5x21.5x1

MERV 13

$19.66

$17.69

$17.30

$16.71

$14.75

$13.76

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18x22x1

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